Put-call parity can be used to show:

A) the precise relationship between put and call prices given equal exercise prices and equal expiration dates.

B) that the value of a call option is always half that of a put given equal exercise prices and equal expiration dates.

C) that the value of a call option is always twice that of a put given equal exercise prices and equal expiration dates.

D) how far in-the-money call options can be.

E) how far in-the-money put options can be.