What was the role of American oil supply in the British war effort during World War II? The United States had a surplus, unused oil production cap...

What was the role of American oil supply in the British war effort during World War II?

The United States had a surplus, unused oil production capacity of about one million barrels per day, which was equivalent to about 30 percent of the 3.7 million barrels per day production that year.
The outbreak of fighting would mean much larger oil consumption for Britain, and the only place to look was to the United States, which was responsible for almost two-thirds of total world production.
In May 1941, the day after Roosevelt declared an 'unlimited national emergency,' he appointed Interior Secretary Harold Ickes as the Oil Czar to manage the American oil supply.
Seventeen thousand gasoline-selling establishments in eastern and southeastern England were quickly shut down, and sales and supplies were concentrated in two thousand stations that could be better defended—or, if need be, set ablaze to deny them to the enemy.
a) Only statements 1 and 2 are correct.
b) Only statements 2 and 3 are correct.
c) Only statements 1, 2, and 3 are correct.
d) Only statements 1, 2, and 4 are correct.
e) All statements are correct.