The correct statement for the molecule , $\;CsI_{3}\;:$ is

Question

(a) It is a covalent molecule .(b) It contains $\;Cs^{+}\;$ and $\;I_{3}^{-}\;$ ions .(c) It contains $\;Cs^{3+}\;$ and $\;I^{-}\;$ ions .(d) It contains $\;Cs^{+}\;,I^{-}\;$ and lattice $\;I_{2}\;$ molecule .