Mr$.$ Pendleton is in his $70$ sut is just learning to use the Internet. He is browsing the Internet and clicks an "I Agree" button to download music from his childhood. Later, he gets a credit card charge for $$500$ for downloading the music. Mr$.$ Pendleton refuses to pay and says he did not realize what he was clicking and that he did not read the agreement. What is the likely outcome of this situation?

a$.$ He would not be responsible because he did not read the terms before he clicked "I Agree."

b$.$ He would not be responsible because he did not realize he had to pay to download music.

c$.$ He would be responsible for the fine, even if he did not know what he was doing.

d$.$ He would be responsible based on the mailbox rule.