When white phosphorous reacts with `NaOH`, it produces a gaseous mixture by the following parallel reaction.
`P_(4) +3NaOH +3H_(2)O rarr 3NaH_(2)PO_(2)+PH_(3)uarr`
`3P_(4)+8NaOH +8H_(2)O rarr 8NaH_(2)PO_(2)+2P_(2)H_(4)uarr`
The gas mixture comes out and catches fire immediately due the presence of
A. `PH_(3)`
B. `P_(2)H_(4)`
C. `P_(2)H_(6)`
D. `H_(2)`
