Which of the following ions is expected to be colourless - $Ti^{4+}, Cu^{2+}, V^{3+}$ and $Fe^{2+}$?

Question

$\begin{array}{1 1}Only \;Ti^{4+}\\ Cu^{2+}\; and \;Fe^{2+} \\ Only \;V^{3+} \\ Ti^{4+}\; and \;V^{3+} \end{array}$