Which of the Following Assumptions Is the Principle of Kinship

Which of the following assumptions is the principle of kinship selection is based on?

A) Although it is sometimes beneficial to help our kin,we must focus primarily on helping ourselves if we are to survive.
B) It is the survival of genes that matters most in evolution.
C) We will help those who are likely to reciprocate that help,regardless of whether or not they are genetically related.
D) Those who have the greatest reproductive fitness share more genes with their kin.