What are the diodes (D1 & D2) used in comparator circuit usually refer to ?

What are the diodes (D1 & D2) used in comparator circuit usually refer to ?

a. Clip Diodes
b. Clamp Diodes
c. PIN diodes
d. Fast Recovery Diodes

Correct Answer : b. Clamp Diodes

Explanation :

Comparator is a circuit which performs comparison between the signal voltage on one input of Op-amp with reference voltage on another input. The arrangement of diodes in comparator circuit is in such a way that they play a cardinal role in protecting Op-amp from getting damage due to excess of input voltage. These diodes intentionally undergoes clamping of difference input voltage to 0.7 or -0.7 volts. However, these diodes are also called as 'Clamp Diodes'.