A pt requests to have his father donate blood for surgery. The pt is going to have a HLA-matched BM transplant and wants add'l blood available for transfusion, just in case. The pt's surgeon calls you and asks if an irradiated unit (in massive transfusion) is necessary. You said, "Yes" bc the blood is from a:
a. step-father
b. second-degree relative
c. first-degree relative
d. distant relative