Detailed Instructions: Given a math problem with context and a question and 5 answer choices, the task is to provide the correct answer choice based on the problem. You must choose one of the given answer choices by letter: a, b, c, d, or e; anything else is invalid.
Q: Problem: 14 men make 1400 toy in 5 days 1 day after work 14 more worker join now how may days work can finish
Options: a. 1 day, b. 2 days, c. 3 days, d. 4 days, e. 5 days
A:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
b