10. In β-oxidation, long-chain fatty acids are activated to acyl-CoAs and the acyl group is further transferred to carnitine because: (A) Fatty acids can not be oxidized by acyl-CoA dehydrogenase unless they are in the acyl-carnitine form. (B) Acyl-CoAs easily cross the mitochondrial membrane, but the fatty acids themselves will not. (C) Carnitine is required to oxidize to NADH. (D) Acyl-carnitines readily cross the mitochondrial inner membrane, but acyl-CoAs do not.