Which two of the following are in correct form ?

A. Let's go to the cinema, shall we ?
B. Let's go to the cinema, do we ?
C. Let's not go to the cinema, shall we ?
D. Let's not go to the cinema, shan't we ?

Choose the correct answer from the options given below:

A

A and D only

B

A and C only

C

B and D only

D

B and C only