If the op-amp in figure has a unity gain frequency of 1 MHz, the cut off frequency is-A-100 kHzB-1 MHzC-10 MHzD-90 MHz-A-100 kHz

A 100 kHz Av = 1+ (Rf/R1). Gain Bandwidth Product = Av x Cutoff frequency. Av = 10. GBW = 1 MHz. Cutoff frequency = 100 KHz.