Let c(t) be the unit step response of a system with transfer function K(s+a)/(s+K). If c(0+) = 2 and c(∞) = 10, then the values of a and K are respectively.

Let c(t) be the unit step response of a system with transfer function

1.	Let c(t) be the unit step response of a system with transfer function K(s+a)/(s+K). If c(0+) = 2 and c(∞) = 10, then the values of a and K are respectively.
A.	2 and 10
B.	-2 and 10
C.	10 and 2
D.	2 and -10
Answer» D. 2 and -10