Which two are true about the lines labeled A through D?

Given: Which two are true about the lines labeled A through D?

A.
If only line D is removed, the code will compile and run.

B.
Line C is optional to allow the code to compile and run.

C.
Line C is mandatory to allow the code to compile andrun.

D.
The code compiles and runs as is.

E.
If only line A is removed, the code will compile and run.

F.
If only line B is removed, the code will compile and run.