Martha used to prepare her own meals, but now she eats out more. How does Martha's change of habit affect GDP?

Select one:

a.It raises GDP by more than the restaurant price of the meals because Martha can do something else during the extra time that she now has.

b.It raises GDP by less than the restaurant price of the meals because now Martha does not work anymore for preparing meals.

c.It raises GDP by the price of the restaurant meals.

d.It raises GDP by the additional value Martha produces during her new extra time.