Given two mixtures
I)  $NaOH+N{a}_{2}C{O}_3$
II)  $NaHC{O}_3+N{a}_{2}C{O}_3$
100 ml of mixture I required ‘W’ and ‘X’ ml of 1 M HCl in separate titrations using phenolphthalein and Methyl orange indicators. While 100 ml of mixture II required ‘Y’ and ‘Z’ ml of same HCl solution in separate titration using same indicators.

	Column I (Substance)		Column II (Molarity in solution)
A	$N{a}_{2}C{O}_3$  in mixture I	P	$(2w-x)\times {10}^{-2}$
B	$N{a}_{2}C{O}_3$  in mixture II	Q	$(z-2y)\times {10}^{-2}$
C	NaOH in mixture I	R	$y\times {10}^{-2}$
D	$NaHC{O}_3$  in mixture II	S	$(x-w)\times {10}^{-2}$