The Price of Chrysler Stock Increased on 30% of the Trading

Multiple Choice

The price of Chrysler stock increased on 30% of the trading days.The price of Ford stock increased on 40% of the trading days over the past year.On 60% of the days when the price of Ford stock increased, the price of Ford stock increased as well.On what proportion of the days did neither stock increase in price?

A) .82
B) .46
C) .54
D) .30
E) .88