Which of the following is punctuated correctly?
a) "When you get to the beach," insisted Betty, Please call me to let me know you made it there."
b) "When you get to the beach insisted Betty, please call me to let me know you made it there"
C) "When you get to the beach," insisted Betty, "please call me to let me know you made it there."
d) "When you get to the beach," insisted Betty, please call me to let me know you made it there.