For the cyclization of carbohydrates caused by a hemiacetal attack from OH of C5, does the attack of the OH follow the addition of H+ from H2O in solution to the oxygen implicated in the carbonyl carbon, or does the H from the OH group bind to the oxygen of the carbonyl group, and the oxygen in the OH group attacks the carbon in the carbonyl group?
A) The attack of the OH follows the addition of H+ from H2O.
B) The H from the OH group binds to the oxygen of the carbonyl group, and the oxygen in the OH group attacks the carbon in the carbonyl group.