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Choose the correct one from among the alternative $\text{A, B, C. D}$ after matching an item in Group $1$ with the most appropriate item in Group $2.$
$\begin{array}{ll}\quad \textbf{Group 1} & \quad \textbf{Group 2} \\ \text {P Ring modulator} & 1 \text { Clock recovery} \\ \text {Q VCO} & 2 \text { Demodulation of FM} \\ \text {R Foster-Seely discriminator} & 3 \text { Frequency conversion}  \\ \text {S Mixer} & 4 \text { Summing the two inputs} \\ & 5 \text{ Generation of FM} \\ & 6 \text { Generation of DSB-Sc}\end{array}$

  1. $\text{P – 1  Q – 3  R – 2  S – 4}$
  2. $\text{P – 6  Q – 5  R – 2  S – 3}$
  3. $\text{P – 6  Q – 1  R – 3  S – 2}$
  4. $\text{P – 5  Q – 6  R – 1  S – 3}$
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