In the reaction $PCl_{5(g)} \rightleftharpoons PCl_{3(g)} + Cl_{2(g)}$,a graph is plotted to show the variation of the rate of forward and backward reactions against time. Which of the following is correct?

• A
  $Q > K_{eq} \to 3, Q = K_{eq} \to 2, Q < K_{eq} \to 1$
• B
  $Q > K_{eq} \to 1, Q = K_{eq} \to 2, Q < K_{eq} \to 3$
• C
  $Q > K_{eq} \to 2, Q = K_{eq} \to 3, Q < K_{eq} \to 1$
• D
  $Q > K_{eq} \to 2, Q = K_{eq} \to 1, Q < K_{eq} \to 3$