Yes the answer is A. give blood.Conrad Fischer specifically talked about this question.
He said we should not make assumptions from the T-shirt. maybe he just borrowed it from a friend or maybe he's joking ...etc
The only thing that we just follow is advanced directives or a legal power of attorney from a family member.
Of course remember that in children we give the blood no matter what the parents are adamant about it.
So should you give blood if the parents are Jehovah's Witness and say they do not want their child to get blood?