According to Cacioppo and Petty's (1979,1985)studies on Repeated Exposure,______

According to Cacioppo and Petty's (1979,1985) studies on repeated exposure,______,

A) repetition of a message increases message comprehension,until it becomes tedious
B) repetition of a strong message leads to more favourable attitudes
C) repetition of a weak message leads to less favourable attitudes
D) all of these