Which sentence incorrectly describes the formation of petroleum?

a. these organisms died and were buried on the ocean floor.
b. this matter was subjected to high temperature and pressure.
c. in such conditions, oxygen was available in abundance.
d. over a period of many years, the matter decomposed and formed oil and gas.

The correct answer for above statement is:

Oil and natural gas were produced from the remains of prehistoric plants and animals that’s why they've described fossil fuels. Hundreds of millions of years ago, ancient plant and animal resides resolved into the seas along with sand, silt, and rocks. As the rocks and silt ended, layer upon layer bunched up in rivers, with coastlines and on the sea floor deceiving the organic material. Outwardly air, the primary layers could not decay off.