In the Process of Obtaining Lead from PbS, or Galena $\rightarrow$

Multiple Choice

In the process of obtaining lead from PbS, or galena, the galena is "roasted" (heated in the presence of oxygen) , so that the following reaction occurs: 2PbS(s) + 3O₂(g) $\rightarrow$ 2PbO(s) + 2SO₂(g) If 35.2 g of PbS is mixed with 15.5 g of oxygen, how many grams of PbO should form?

A) 32.8 g
B) 72.1 g
C) 105 g
D) 65.7 g
E) 49.2 g