Figure $18 < 1$ -If $\mathrm { R } _ { f } = 150 \mathrm { k } \Omega$

Multiple Choice

Figure $18 < 1$
-If $\mathrm { R } _ { f } = 150 \mathrm { k } \Omega$ and $\mathrm { R } _ { \mathrm { i } } = 2.2 \mathrm { k } \Omega$ in Figure 18-1(c) , the voltage gain equals________

A) -1
B) -68.2
C) -69.2
D) infinite