In an inverting op-amp circuit for which the gain is −4 V/V and the total resistance used is 100 kΩ. Then the value of R1 and R2 (negative feedback)

In an inverting op-amp circuit for which the gain is −4 V/V and the

1.	In an inverting op-amp circuit for which the gain is −4 V/V and the total resistance used is 100 kΩ. Then the value of R1 and R2 (negative feedback)
A.	R1 = 20KΩ and R1 = 80KΩ
B.	R1 = 80KΩ and R1 = 20KΩ
C.	R1 = 40KΩ and R1 = 60KΩ
D.	R1 = 50KΩ and R1 = 50KΩ
Answer» B.