I bet no one can get this question right. Which sentence is correctly punctuated?
a. I will be relocating to Fresno California on January 4, 2013.
b. I will be relocating to Fresno California on January 4 2013.
c. I will be relocating to Fresno, California, on January 4, 2013.
d. I will be relocating to Fresno, California on January 4 2013.