Cracking tendencies are associated with which type of hydrogenation

cracking-tendencies-are-associated-with-which-type-of-hydrogenation

Cracking tendencies are associated with which type of hydrogenation catalysts?

A. Vigorous

B. Mild

C. Slow

D. All of the mentioned

The question was asked in an online quiz.

My question is taken from Hydrogenation in section Hydrogenation of Unit Processes

Correct answer is A. Vigorous

The best explanation: Cracking tendencies are usually associated with these vigorous hydrogenation catalysts, although through control of the variables of temperature and pressure, the cracking reactions can usually be suppressed.