The correct sequence is : For -Acidic Nature

Question

$\begin{array}{1 1}(a)\;H_2S < H_2Se < H_2Te\\(b)\;H_2Te < H_2S < H_2Se\\(c)\;H_2Te=H_2S < H_2Se\\(d)\;H_2Te=H_2S=H_2Se\end{array}$