The correct option is D None of the above
Typical electrical parameters of comparator include positive & negative output levels, strobe current & strobe release time, response time & saturation voltage. Thus, the interval between input step function & the duration of crossing logic threshold voltage at the output gives the conceptual idea of response time.
On the other hand, the time required for rising the logic threshold voltage at the output after the driving session of strobe terminal is conducted from zero to one logic level.
Eventually, the parameter of settling time is totally not involved in comparators.