Which of these is a statement of opinion?
A. Biofuels are the most sensible sources of energy available on the market today.
B. The chocolate-fueled racecar was designed to reach speeds of 145 miles per hour.
C. Biofuels are made from natural materials instead of being made from petroleum.
D. The chocolate-fueled racecar's seat is built of foam made from flax fiber and soybean oil.
Please answer ASAP!