Which of the Following Is True of Aldol Reactions

Multiple Choice

Which of the following is true of aldol reactions?

A) The thermodynamics and kinetics of aldol reactions can be controlled by base selection.
B) Aldol reactions can be completed by reacting an aldehyde and a ketone in the presence of a base.
C) The yields of aldol reactions involving only one type of α hydrogen are generally higher than the yields of those involving multiple types of α hydrogens.
D) Aldol reactions are used to create carbon-carbon bonds.
E) All of the above are true of aldol reactions.