Among the following which gives 520 gm of Acetylene  as a product

• A

  $\text{22\hspace{0.17em}C + 11\hspace{0.17em}}{\text{H}}_{\text{2}}\underset{{\text{1200 }}^{\text{o}}\text{C}}{\overset{\text{Electric arc}}{\to }}$

• B

  ${\text{60\hspace{0.17em}\hspace{0.17em}CH}}_{\text{4}}\text{ + 10\hspace{0.17em}\hspace{0.17em}}{\text{O}}_{\text{2}}\underset{ }{\overset{\text{controled oxidation}}{\to }}$

• C

  ${\text{10\hspace{0.17em}\hspace{0.17em}Mg}}_{\text{2}}{\text{C}}_{\text{3}}{\text{ + 10\hspace{0.17em}\hspace{0.17em}H}}_{\text{2}}\text{O}\underset{ }{\overset{ }{\to }}$

• D

  None