Maria is making blueberry muffins using a blue berry cake recipe. to make the muffins, she has to divide the cake recipe in half. if the cake recipe calls for 2/3 cup of milk, which expression can maria use to calculate how much milk she needs to make the muffins.

a 1/2 / 2/3

b. 2/3 * 2

c 2/3 * 1/2

d. 2 / 2/3