$1.$ Find out if the statement is true or false: The formation of petroleum primarily occurs in marine environments where microscopic organisms accumulate, decompose without oxygen, and transform under high pressure and heat over millions of years.

Answer: A$.$ True

B$.$ False

C$.$ Not enough information

D$.$ None of the above

$2.$ Find out if the statement is true or false: Major petroleum reserves are often found in regions that are geologically stable, such as the interiors of continental plates, where oil is less likely to migrate away from its original source rocks.

A$.$ True

Answer: B$.$ False

C$.$ Not enough information

D$.$ None of the above

$3.$ Find out if the statement is true or false: The API $($American Petroleum Institute$)$ gravity scale classifies crude oil into light, medium, and heavy types, with light oils generally having higher API values and being more desirable due to their higher yields of gasoline.

Answer: A$.$ True

B$.$ False

C$.$ Not enough information

D$.$ None of the above

$4.$ Find out if the statement is true or false: Sulfur content in crude oil, which determines whether it is classified as sweet or sour, has a significant impact on the environmental compliance costs of refining, with sour crudes being more expensive to process due to higher sulfur removal requirements.

Answer: A$.$ True

B$.$ False

C$.$ Not enough information

D$.$ None of the above