The typical family on the Planet Econ consumes 12 pizzas, 5 pair of jeans, and 30 gallons of milk. In 2016, pizza cost $12 each, jeans cost $50 per pair, and milk costs $4 per gallon. In 2017, the price of pizzas increased to $15 each, while the price of jeans and milk remained the same. Between 2016 and 2017, a typical family's cost of living:

a. Decreased by 7%
b. Increased by 7%
c. Remained the Same
d. Increased by 25%