Rise time is defined by the interval when____________?

(A) gate current rises from 90 % to 100 % of it final value (X)
(B) anode voltage drops from 90 % to 10 % of its initial value (X)
(C) anode current rises 10 % to 90 % of its final value (X)
(D) both B and C ()

Answers: Rise time is defined by the interval when both B and C.