Column A has data return Column C

Hello,

If Column A or Column B has a date in it then I need the info from Column C to appear in another column

Column A Column B Column C Column D
12/14/16 11/1/15 12345 =Blank because a & b have dates
12115 =Column C's info because A & B are empty
32165 = Column C's info because A & B are empty
11/5/16 32154 =blank because a has a date
10/18/16 98752 =blank because b has a date
12/12/16 65498