Match the following.

	Column-1 Reaction		Column-2 Main product
A	${\mathrm{SO}}_3\stackrel{\mathrm{heavy} water}{⟶}$	I	${\mathrm{C}}_2{\mathrm{D}}_2$
B	${\mathrm{CaC}}_2\stackrel{\mathrm{heavy} \mathrm{water} \left(\mathrm{excess}\right)}{⟶}$	II	${\mathrm{CD}}_4$
C	${\mathrm{Al}}_4{\mathrm{C}}_3\stackrel{\mathrm{heavy} \mathrm{water} (\mathrm{large} \mathrm{excess})}{⟶}$	III	${\mathrm{D}}_2{\mathrm{SO}}_3$
		IV	${\mathrm{C}}_2{\mathrm{D}}_4$
		V	${\mathrm{D}}_2{\mathrm{SO}}_4$

The correct match is

• A

  A	B	C
  III	I	IV

• B

  A	B	C
  III	IV	II

• Correct answer
  C

  A	B	C
  V	I	II

• D

  A	B	C
  V	I	IV

Hence, the correct answer is option: 'C'.