Respiration in Plants question bank (Biology)

A cell suspension of actively respiring mitochondria is treated with either chemical X (experiment 1) or chemical Y (experiment 2), or left untreated (experiment 3). Chemical X selectively inhibits electron transport from Complex I to ubiquinone, while chemical Y selectively inhibits electron transport from Complex III to cytochrome C. Which one of the following options represents the correct order of relative number of ATP synthesised in mitochondria?

Match the enzymes in Column I with the cellular compartments in Column II.
$\begin{array}{|l|l|l|l|}\hline & \text{Column I} & & \text{Column II} \\ \hline P & \begin{array}{l} \text{Succinate} \\ \text{dehydrogenase} \end{array} & i & \text{Cytoplasm} \\ \hline Q & \begin{array}{l} \text{Pyruvate} \\ \text{dehydrogenase} \end{array} & ii & \text{Inner mitochondrial membrane} \\ \hline R & \begin{array}{l} \text{Lactate} \\ \text{dehydrogenase} \end{array} & iii & \text{Mitochondrial matrix} \\ \hline S & \text{ATP synthase} & iv & \text{Thylakoid membrane} \\ \hline & & v & \text{Inner chloroplast membrane} \\ \hline \end{array}$
Which of the following combinations is correct?