Which of the Following Best Explains the Idea of Moral

Which of the following best explains the idea of moral skepticism?

A) Moral skepticism is the view that all moral claims are false.
B) Moral skepticism is the view that no moral arguments can be cogent.
C) Moral skepticism is the view that the truth of a moral claim is always relative to the culture of the person making the claim.
D) Moral skepticism is the view that there is no objective moral truth.