Consider the following results of a multiple regression model of dollar price of unleaded gas (dependent variable) and a set of independent variables: price of crude oil, value of S&P500, price U.S. Dollars against Euros, personal disposal income (in million of dollars) :

	Coefficient	t-statistics
Intercept	0.5871	68.90
Crude Oil	0.0651	32.89
S&P 500	-0.0020	18.09
Price of $	-0.0415	14.20
PDI	0.0001	17.32

R-Square = 97% What is the interpretation of coefficient for PDI?

		Every 1 unit increase in the value of PDI will cause unleaded gas price to increase by 0.01 cents.
		Every 1 unit increase in the value of PDI will cause unleaded gas price to decrease by 0.01%.
		Every 1 unit increase in the value of PDI will cause unleaded gas price to decrease by 0.01 cents.
		Every 1% increase in the value of PDI will cause unleaded gas price to decrease by 0.01 cents.