Match the following.

List-I (President Powers)	List-II (Explanations)
a. Commulation	1. Stay over the execution of a sentence.
b. Remission	2. Reducing the amount of sentence without changing its character.
c. Respite	3. Giving lesser sentence instead of the penalty prescribed.
d. Reprieve	4. Substituting one form of punishment for another of a lighter character.