Match the following and identify the correct option. 

(a)	$\mathrm{CO}\left(\mathrm{g}\right)+{\mathrm{H}}_2\left(\mathrm{g}\right)$	(i)	$\mathrm{Mg}{\left({\mathrm{HCO}}_3\right)}_2+\mathrm{Ca}{({\mathrm{HCO}}_3) }_2$
(b)	Temporary hardness of water	(ii)	An electron deficient hydride
(c)	${\mathrm{B}}_2{\mathrm{H}}_6$	(iii)	Synthesis gas
(d)	${\mathrm{H}}_2{\mathrm{O}}_2$	(iv)	Non-planar

• A

  (a)-iii; (b)-ii; (c)-i; (d)-iv

• B

  (a)-iii; (b)-iv; (c)-ii; (d)-i

• C

  (a)-i; (b)-iii; (c)-ii; (d)-iv

• D

  (a)-iii; (b)-i; (c)-ii; (d)-iv