A 2009 Chevrolet model has more horsepower than the 2008 version and is included in the BLS basket of goods. BLS attempts to account for this change in the market basket by:______

a. Substituting in a different vehicle with the same horsepower as the 2008 model.
b. Dropping the good from the basket.
c. Adjusting the share of the market basket allocated to transportation.
d. Adjusting the price of the good to account for the quality change.