Although Party Leaders Still Drove the Delegate Selection Process in 1960

Although party leaders still drove the delegate selection process in 1960, why did John F. Kennedy, a Catholic, choose to run in the primary in West Virginia, a predominately Protestant state?

A) Candidates were required to run in all available primaries.
B) He wanted to prove that a Catholic could win Protestant votes.
C) He wanted to prove that his policies were not those of the Catholic Church.
D) Party leaders pushed him into it, hoping to prove that he was not a viable national candidate.
E) West Virginia law automatically places all candidates' names on the ballot.