Consider the Electrolysis of a Brine Solution

Consider the electrolysis of a brine solution:
2NaCl(aq) + H₂O → Cl₂(g) + H₂(g) + 2NaOH(aq)
A 10.0-g sample of sodium chloride was placed in 10.0 g of water. If 3.85 g of Cl₂ was obtained, what was the percent yield of Cl₂?

A) 95.8%
B) 38.5%
C) 19.3%
D) 63.5%
E) 19.6%