8.5 g of \({\text{N}}{{\text{H}}_{\text{3}}}\) are dissolved in \({{\text{H}}_{\text{2}}}{\text{O}}\) to prepare a \({\text{500 c}}{{\text{m}}^{\text{3}}}\) solution. Which statements are correct?

I.     \({\text{N}}{{\text{H}}_{\text{3}}}\) is the solute and \({{\text{H}}_{\text{2}}}{\text{O}}\) is the solution

II.     The concentration of the solution is \({\text{17 g}}\,{\text{d}}{{\text{m}}^{ - 3}}\)

III.     \({\text{[N}}{{\text{H}}_3}{\text{]}} = 1.0{\text{ mol}}\,{\text{d}}{{\text{m}}^{ - 3}}\)

A.     I and II only

B.     I and III only

C.     II and III only

D.     I, II and III

C