Lucy likes to exercise each day before going to university, enjoying equally running and casually going to the gym to do classes, paying for each class at the time of attendance.She normally does each activity 3 times a week, with a rest day on Sunday. An increase in the cost of classes at the gym will:

Select one:

a.Running is a luxury good she will reduce her consumption of running and substitute more gym classes.

b.Running and Gym classes are substitutes for Lucy she will increase her frequency of running and reduce gym classes.

c.Have no impact on her, there are no substitutes.

d.Increase the number of classes she attends at the gym as the are normal goods.