How does alimony differ from child support prior to 12/31/2018?

a. Child support is not taxable to the recipient and alimony is

b. Alimony is not taxable to the recipient and child support is

c. Alimony payments can decrease based on an event in the childs life and child support cannot

d. Alimony payments are generally determined from a table that considers relative incomes, child care costs, etc. and child support is not