Read the following story and answer the multiple-choice question. Think step-by-step. Provide the answer first, and then explain it.
Story:
1 NAME_1, NAME_2, NAME_3 NAME_4 and NAME_5 entered the back_yard.
2 The lettuce is in the blue_container.
3 NAME_1 moved the lettuce to the green_cupboard.
4 NAME_1 exited the back_yard.
5 NAME_2 moved the lettuce to the blue_treasure_chest.
6 NAME_2 exited the back_yard.
7 NAME_6 made no movements and stayed in the back_yard for 1 minute.
8 NAME_6 exited the back_yard.
9 NAME_4 moved the lettuce to the red_basket.
10 NAME_4 exited the back_yard.
11 NAME_5 moved the lettuce to the blue_container.
12 NAME_2 dislikes the corn.
13 NAME_5 exited the back_yard.
14 NAME_1, NAME_2, NAME_3 NAME_4 and NAME_5 entered the waiting_room.
15 NAME_3 NAME_1 and NAME_2 entered the playroom.
16 The melon is in the green_box.
17 NAME_6 made no movements and stayed in the playroom for 1 minute.
18 NAME_1 dislikes the lettuce.
19 NAME_6 exited the playroom.
20 NAME_1 made no movements and stayed in the playroom for 1 minute.
21 NAME_1 exited the playroom.
22 NAME_2 moved the melon to the red_crate.
23 NAME_2 exited the playroom.
24 NAME_3 NAME_1 and NAME_2 entered the waiting_room.
25 NAME_5, NAME_3 NAME_4 and NAME_1 entered the hallway.
26 The tangerine is in the blue_bottle.
27 NAME_5 moved the tangerine to the red_box.
28 NAME_5 exited the hallway.
29 NAME_6 made no movements and stayed in the hallway for 1 minute.
30 NAME_6 exited the hallway.
31 NAME_4 moved the tangerine to the blue_bathtub.
32 NAME_4 exited the hallway.
33 NAME_2 dislikes the lettuce.
34 NAME_1 moved the tangerine to the red_container.
35 NAME_1 exited the hallway.
36 NAME_5, NAME_3 NAME_4 and NAME_1 entered the waiting_room.
Question: Where is the lettuce really?
Choices: A. red_crate, B. green_box, C. green_bathtub, D. red_drawer, E. blue_cupboard, F. blue_bottle, G. blue_bathtub, H. red_box, I. blue_crate, J. red_container, K. blue_container, L. red_basket, M. red_bucket, N. blue_treasure_chest, O. green_cupboard