Which of the Following Events Leads to a Rise in the Price

Multiple Choice

Which of the following events leads to a rise in the price of oranges?

A) a rise in the price of apples if apples and oranges are substitutes
B) a decrease in income if oranges are a normal good
C) a technological improvement in the production of oranges
D) a scientific discovery that oranges cause hair loss
E) good growing weather in Florida