Which of the following statements is not correct: Question 1 Not yet answered Marked out of 1.00 Flas Select one: O a. A second-order PLL can track a frequency step with zero steady-state error. b. A first-order PLL can track a frequency step with a zero steady-state error. O c. A first-order PLL can track a phase step with a zero steady-state error. d. A third-order PLL can track a frequency step with zero steady-state error