A bus $$B_{1}$$ arrives at a, station S, 50 minutes late, but it arrives 30 minutes before another bus $$B_{2}$$ which reaches the station S 20 minutes early than its scheduled time 3.40 pm. Then the scheduled time of arrival of bus $$B_{1}$$ and station S is

A

1.30 pm

B

2.00 pm

C

2.30 pm

D

3.00 pm