In the presence of peroxide,hydrogen chloride and hydrogen iodide do not give anti-Markownikoff addition to alkenes because

Question

$\begin{array}{1 1}(a)\;\text{Both are highly ionic}\\(b)\; \text{One is oxidising and the other is reducing}\\(c)\;\text{One of the steps is endothermic in both the cases}\\(d)\;\text{All the steps are exothermic in both the cases}\end{array}$