When a monosaccharide reacts to give the pyranose form from its open-chain form, how many distinct pyranose forms are possible?

A) 1
B) 2
C) 2ⁿ, where n is the number of carbons present
D) 4n + 2, where n is the number of carbons present
E) 4

The reaction of LDA with acetophenone produces ________.

A) an enol
B) an enolate
C) an ylide
D) alkylation
E) halogenation