If Lisa Spends Her Income on Veggie Burgers and Pints

If Lisa spends her income on veggie burgers and pints of soy milk and the price of veggie burgers is three times the price of a pint of soy milk, then when Lisa maximises her utility she will buy

A) both goods until the marginal utility of veggie burgers is three times the marginal utility of soy milk.
B) three times as many veggie burgers as pints of soy milk.
C) three times as many pints of soy milk as veggie burgers.
D) both goods until the marginal utility of a pint of soy milk is three times the marginal utility of veggie burgers.