Which of the Following Record Validation Rules Requires the User

Multiple Choice

Which of the following record validation rules requires the user to enter a value into Field1 that is greater than Field2,and Field2 must have a value greater than 10?

A) ([Field1] is Null) XOR ([Field2] is Null)
B) [Field1] < > [Field2]
C) (([Field1] > [Field2]) AND [Field2] >10) )
D) none of the above