Ted and Mary had a marriage breakdown and have a child support arrangement prior to divorce, in which Ted is obligated to pay child support to Mary. Both of them earn $25,000 a year and have no other assets. During the marriage, they had two kids, Max, age 10 and Martha, age 11. Mary has sole custody of the two kids. Ted, goes on to marry Jen and have a stepchild named, Arthur, who is age 6. The following situations would lead to a change in child support arrangements, except:

a. Ted has over $100,000 in debt.

b. Max requires extra tutoring for Math which costs $1,000 a year.

c. Martha doesn't get along with Mary and would like to go boarding school which costs $10,000 a year.

d. Max is great in basketball and wants to take on extra basketball coaching which costs $500 a year.