Why is aniline soluble in aqueous HCl?

Question

$\begin{array}{1 1} \text{(a) Aniline forms the salt anilinium chloride which is water soluble}\\ \text{(b) Aniline forms the salt anilinium which is water insoluble} \\ \text{(c)Aniline forms the salt acetanilide which is water soluble} \\(d)\;\text{None of these} \end{array}$