A compound of sulfur and oxygen is 50.0% sulfur, 50.0% oxygen by weight. Sulfur and oxygen form another compound, in accordance with the law of multiple proportions. Which of the following is a likely composition for the second compound?
A) 85.0 mass % sulfur 15.0 mass % oxygen.
B) 65.0 mass % sulfur 35.0 mass % oxygen.
C) 55.0 mass % sulfur 45.0 mass % oxygen.
D) 45.0 mass % sulfur 55.0 mass % oxygen. E) 40.0 mass % sulfur 60.0 mass % oxygen.