In an inverting op-amp circuit for which the gain is 4 V/V and the total resistance used is 100 k . 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 to

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