If function with date

[RJB78]

Hello - I am looking for a formula that will return "A" if the date in B5 is equal to or less than a year ago, and "B" if the date in B5 is greater than 1 year ago

So far I have:

=IF(C5>=DATE(YEAR(B4)-1,B4,B4),"A","B")

C5 is a date that varies
B4 is today's date =TODAY()

It returns: #NUM

Thank you in advance

 

[sheetspread]

Excel 2010
	A	B
1	4/23/2017	A
Sheet8

Cell Formulas
Range	Formula
B1	=IF(DATEDIF(A1,TODAY(),"y")>=1,"B","A")

 

[RJB78]

Thank you