Glucose, a sugar, has the chemical formula C₆H₁₂O₆. Using mass percent, how many grams of oxygen and carbon are in 12.5g of glucose?

a) 5.36g oxygen, 7.14g carbon
b) 6.25g oxygen, 6.25g carbon
c) 4.76g oxygen, 7.74g carbon
d) 7.50g oxygen, 5.00g carbon