What Can We Infer, According to Sinnott-Armstrong, from the Fact

Multiple Choice

What can we infer, according to Sinnott-Armstrong, from the fact that none of the principles he considers shows us that individuals have a moral obligation to reduce their greenhouse gas emissions?

A) That moral conclusions cannot always be based on principles.
B) That principles are irrelevant to particular moral judgments.
C) That we should never trust our moral intuitions because they are often unsupported by principles.
D) That we should not rely on our intuitive judgments about this particular case.