Which of the Following Can We Infer from Singer's Claim

Which of the following can we infer from Singer's claim that the principle of equality is equality of consideration?

A) We can meet the demands of the principle of equality by treating equally all those creatures whose interests we consider.
B) If we don't consider a creature's interests, it's because those interests don't deserve consideration.
C) If an animal doesn't consider humans' interests in its decision making, then we ought equally not consider its interests.
D) We can meet the demands of the principle of equality and still treat other species differently.