Context: Diorite forms from melted rock. Dolerite can form when melted rock cools below the earth's surface. This piece of diorite has white and black mineral grains in it.
Diorite is a very hard rock. The people of ancient Egypt used diorite to make pottery and sculptures. Diorite was also used to polish other rocks such as granite.
What type of rock is diorite?
A. metamorphic
B. igneous
C. sedimentary
Identify the correct choice from the options below and respond with the letter of the correct option.

B