What compound is formed when lithium reacts with selenium?

A.     LiSe

B.     ${\text{L}}{{\text{i}}_{\text{2}}}{\text{Se}}$

C.     ${\text{LiS}}{{\text{e}}_{\text{2}}}$

D.     ${\text{L}}{{\text{i}}_{\text{2}}}{\text{S}}{{\text{e}}_{\text{2}}}$

B