Answer:
B) When the price of ice cream rose, the quantity demanded of ice cream fell and the demand for ice cream topping fell.
Step-by-step explanation:
A rise in the price of a good would lead to a fall in the quantity demanded of the good.
So, a rise in the price of ice-cream would lead to fall in the quantity demanded of ice cream.
A rise in the price of ice-cream would lead to a fall in the demand for ice cream toppings.