Consider the following Chemical equation :
\(a \,Al_2O_3 + b\,HCl \rightarrow c\, AlCl_3 +d\,H_2O\)
In order to balance this chemical equation, the values of a, b, c and d must be
(A) 1, 6, 2 and 3
(B) 1, 6, 3 and 2
(C) 2, 6, 2 and 3
(D) 2, 6, 3 and 2