Which of the following statements about diamonds is correct?
A) Diamonds are formed from carbon atoms arranged in a hexagonal lattice structure.
B) Diamonds are a form of carbon with atoms arranged in a cubic crystal lattice, making them one of the hardest known materials.
C) Diamonds are primarily composed of silicon and are used in electronic components.
D) Diamonds are formed under low-pressure conditions and are commonly found in sedimentary rock formations.