Which sequence has the molecules in order of increasing nitrogen-nitrogen bond length?

A.     ${{\text{N}}_{\text{2}}} < {{\text{N}}_{\text{2}}}{{\text{H}}_{\text{4}}} < {{\text{N}}_{\text{2}}}{{\text{H}}_{\text{2}}}$

B.     ${{\text{N}}_{\text{2}}} < {{\text{N}}_{\text{2}}}{{\text{H}}_{\text{2}}} < {{\text{N}}_{\text{2}}}{{\text{H}}_{\text{4}}}$

C.     ${{\text{N}}_{\text{2}}}{{\text{H}}_{\text{4}}} < {{\text{N}}_{\text{2}}}{{\text{H}}_{\text{2}}} < {{\text{N}}_{\text{2}}}$

D.     ${{\text{N}}_{\text{2}}}{{\text{H}}_{\text{2}}} < {{\text{N}}_{\text{2}}}{{\text{H}}_{\text{4}}} < {{\text{N}}_{\text{2}}}$

B