When acetylene is passed through red hot iron tube, compound 'X' is formed. Which one of the following reactions will yield 'X' as major product?

 when acetylene is passed through red hot iron tube, benzene is formed.$3\mathrm{CH}\equiv \mathrm{CH}\underset{[\mathrm{Fe}-\mathrm{tube}]}{\overset{Re\mathrm{dhot}}{\to }}{\mathrm{C}}_6{\mathrm{H}}_6$ 

From above given reactions

${\mathrm{C}}_6{\mathrm{H}}_5\mathrm{Cl}+{\mathrm{H}}_2\mathrm{O}\to$${\mathrm{C}}_6{\mathrm{H}}_5\mathrm{OH}$ 
${\mathrm{C}}_6{\mathrm{H}}_5\mathrm{COONa}+\mathrm{NaOH}\underset{\mathrm{\Delta }}{\overset{+\mathrm{CaO}}{\to }}$${\mathrm{C}}_6{\mathrm{H}}_6+{\mathrm{Na}}_2{\mathrm{CO}}_3$