Which sentence contains a subordinating conjunction that is used with correct punctuation?
Select one:

a. Even if I move to California this summer, my friends will still come to visit for my birthday.

b. Even if I move to California this summer my friends will still come to visit for my birthday.

c. My friends will still come to visit for my birthday, even if I move to California this summer.

d. I may move to California this summer, but my friends will still come to visit for my birthday.