When a gold foil is bombarded by a beam of α particle, only a few of them get deflected whereas most go straight undeflected. This is because

Question

$\begin{array}{1 1} \text{a. The force of attraction exerted on α particles by the electrons is insufficient } \\ \text{ b. The volume of nucleus is much smaller than that of the atom} \\ \text{ c. The force of repulsion acting on the fast moving α particles is very small } \\ \text{ d. The neutrons have no effect on α particles} \end{array}$