The number of bits in a binary PCM system is increased from

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The number of bits in a binary PCM system is increased from n to n + 1. As a result, the signal to quantization noise ratio will improve by the—

1. n + 1
  n
2. 2^{(n + 1)/ n}
3. 2^{2 (n + 1)/ n}
4. which is independent of n

Correct Option: C

NA