Mort Is Trying to Convince His Parents That He Should

Mort is trying to convince his parents that he should go to a university in another province,rather than the local university.He has made five strong points that support his position,but his parents are not convinced.Based on the research into factors that influence persuasion,what should Mort do

A)  Repeat the arguments that he has already made. 
B)  Play some soft background music while he and his parents discuss the issue some more. 
C)  Add additional points that support his position, even if they are weaker arguments. 
D)  Ask his parents to think about their decision for a few days.