What transformation occurs in the function compared to ?

Question

A

Stretch horizontally by a factor of 2, then shift vertically by 3 units downwards

B

Compress horizontally by a factor of

, then shift vertically by 3 units upwards

C

Stretch vertically by a factor of 2, then shift vertically by 3 units upwards

D

Compress vertically by a factor of

, then shift vertically by 3 units upwards