Which of the following statements correctly describes the relationship between input impedance, slew rate, and power supply rejection ratio (PSRR) in operational amplifiers (op-amps)?

The input impedance, slew rate, and PSRR are largely independent characteristics of an op‑amp, each set by different parts of the internal circuit. Input impedance is determined by the bias network and input transistor size; slew rate depends on the output stage’s current‑to‑voltage conversion; and PSRR comes from how well the internal bias currents are stabilized against supply changes. Because they arise from separate subcircuits, improving one (e. g. , raising input impedance) rarely changes the others unless the design trades bias current or output stage size.