​Aldehydes and Ketones Cannot Undergo Nucleophilic Addition-Elimination Reactions Because

​Aldehydes and ketones cannot undergo nucleophilic addition-elimination reactions because:

A) ​they are extremely stable molecules and do not react chemically in most cases.
B) ​they do not have an electronegative atom attached to the carbonyl group to act as a good leaving group.
C) ​they do not have an electronegative atom attached to the α-carbon to act as a good leaving group.
D) ​the bond angles in these molecules are not conducive for simultaneous nucleophilic addition and elimination.