I believe the answer is letter “B”
PCM: Pulse code modulation. It is a method used to digitally represent sampled analog signals. It is the standard form of digital audio in computers, digital telephony and compact discs. The amplitude of this signal is sampled regularly at uniform intervals.
PAM: Pulse amplitude modulation. It is a form of signal modulation where the message information is encoded in the amplitude of a series of signal pulses.
Answer:
My dear sons and daughters always be happy and cheerful. Never curse your fate. You can read and write every thing lead a useful life you can do every thing in this world, good bye.
6: I
7: I
8: I
9: C
10: I
11: C
12: I
13: C
14: C
15:I
I may have missed one but i hope this helps!
If I remember correctly the both have different set of values so your answer would be B