Which of the following is (are) true of the nicotinic acetylcholine receptor?(A) The nicotinic acetylcholine receptor is a ligand-gated ion channel.(B) The nicotinic acetylcholine receptor is a pentameric complex.(C) One acetylcholine molecule must bind to each of the two α subunits in the receptor complex in order to gate the channel open.(D) Once gated open, the channel pore is equally permeable to Na+ and K+(E) This type of receptor is also commonly referred to as a receptor channel. Checking your answer...