A sinusoidal signal with peak-to-peak amplitude of $1.536 \mathrm{~V}$ is quantized into $128$ levels using a mid-rise uniform quantizer. The quantization-noise power is
- $0.768 \mathrm{~V}$
- $48 \times 10^{-6} \mathrm{~V}^{2}$
- $12 \times 10^{-6} \mathrm{~V}^{2}$
- $3.072 \mathrm{~V}$