Jack and Jill Went Out on Their First Date Last

Multiple Choice

Jack and Jill went out on their first date last weekend. During the evening, Jack said to Jill, "Will you marry me?" Jill did not understand what Jack what trying to convey because his question was inappropriate given the status of their relationship at this point. Which rules of language use were violated by Jack's request and explain why Jill did not understand the message?

A) pragmatic rules
B) semantic rules
C) syntactic rules
D) both a and c are correct