If You Suspect Anti-C Is Present in a Patient's Serum

Multiple Choice

If you suspect anti-C is present in a patient's serum, and anti-Fy^a still has to be ruled out using other reagent cells, what would the phenotype of the rule out cell have to be?

A) Fy(a+) , C-, Fy(b+)
B) Fy(a+) , C-, Fy(b-)
C) Fy(a+) , C+, Fy(b-)
D) Fy(a+) , C+, Fy(b+)