Select the most suitable idiomatic expression from the alternatives and output it.
Alternative:
A. Take a backseat
B. Take a seat
C. Take a backrest
A. Take a backseat
Complete the following task based on the instruction and optional input provided.### Instruction:
Select the most suitable idiomatic expression from the alternatives and output it.

### Input:
Alternative:
A. Take a backseat
B. Take a seat
C. Take a backrest

### Output:
A. Take a backseat