What Role Does the Claim That the Capacity for Suffering

Multiple Choice

What role does the claim that the capacity for suffering and enjoying things is prerequisite for having interests play in Singer's paper?

A) Singer argues that nonhuman animals have this capacity, and therefore, they have interests, which, according to the principle of equality, ought to be given equal consideration.
B) Singer argues that nonhuman animals have this capacity, and therefore, they have interests, which, according to the principle of equality, ought to be understood as the same interests as human interests.
C) Singer argues that nonhuman animals' capacity for suffering is not equal to humans' capacity for suffering, and therefore, their interests are not equal to ours.
D) Singer is using this to explain why the moral principle of equality does not apply in the cases of racism and sexism.