Find the sequence in which the following milestones are attained?
A → Simles at mirror image → 6 months
B → Sits without support → 8 months
D → Waves bye-bye → 9 months
C → Mature pincer grasp → 12 months
B → D → A → C
A → D → B → C
B → A → D → C
A → B → D → C