A manufacturer of automobiles conducted a market survey. Sixty percent of the customers want better fuel efficiency,

while 45% want a vehicle navigation system and 25% percent want both features.

Given that = 400, = 625, Cov(X, Y) = 375, and n = 10, then the correlation coefficient is:

A) 0.80 B) 0.70 C) 0.75 D) 0.85