: YesA student spends all of her income on pizza and books. When pizzas cost $3 each and books cost $10 each, she consumed 30 pizzas and 3 books per month. The price of pizzas fell to $2.90 each while the price of books rose to $11 each. The price change:A:made her worse off B:left her exactly as well off  as before. C:had the same effect as a $3 increase in her income. D:left her at least as well off  as before and possibly helped her.