Help please! I have no idea what this question is talking about!!

Ethanol contains the elements carbon, hydrogen, and oxygen. When ethanol burns, it chemically reacts with oxygen gas.

C2H6O + O2
ethanol oxygen gas

What elements will be present in the substances that are created when ethanol burns?

A. nitrogen, sulfur, and sodium only
B. carbon, hydrogen, and oxygen only
C. carbon and hydrogen only
D. the elements cannot be determined