Put-Call Parity Is Defined as the Relationship Between Which of the Following

Multiple Choice

Put-call parity is defined as the relationship between which of the following variables?
I.risk-free asset
II.underlying stock price
III.call option
IV.put option

A) I and II only
B) II and III only
C) II, III, and IV only
D) I, II, and III only
E) I, II, III, and IV