need help please asap

18. For the Phase Locked toop circuit shown below, identify the following: LoopFilter/Error Amplifier, Reference Oscillator, Phase Detector, Voltage Controlled Oscillator. a. b. c. d. 19. The input Oscillator runs at 8MHz. The Voltage Controlled Oscillator can be tuned over the range of 100MHz to 150MHz. In order for the circuit to be tuned over the range of 125MHz to 140MHz in increments of 100kHz, determine the following a. The value the Reference Divide-by N must be set to. b. The range of values the Programmable Divide-by-N must cover. c. The frequency into the Phase Detector inputs. d. The value to which the Programmable Divide-by-N must be set in order to obtain an output frequency of 133.7MHz