The incorrect statement(s) regarding (i) $H_{3}P{O}_2,$ (ii) $H_{3}P{O}_3$ (iii) $H_{3}P{O}_4$is/are

The number of P – H bonds in all three molecules together is 3.

All three have equal number of P = O bonds.

All these three compounds can act as reducing agents.

The number of $s{p}^3$ hybrid orbitals involved in the bonding of (iii) is 16.