Balance the Following Equation Using the Smallest Set of Whole $\rarr$

Balance the following equation using the smallest set of whole numbers, then add together the coefficients.Do not forget to count coefficients of one.The sum of the coefficients is ___ Al + ___ H₂SO₄ $\rarr$ ___ Al₂(SO₄) ₃ + ___ H₂

A) 3.
B) 5.
C) 6.
D) 9.
E) 12.