What Is the Arithmetic-Logic Unit

What is the arithmetic-logic unit?

A) the actual hardware that interprets and executes the program (software) instructions and coordinates how all the other hardware devices work together
B) interprets software instructions and literally tells the other hardware devices what to do, based on the software instructions
C) a type of CPU that can recognize as many as 100 or more instructions, enough to carry out most computations directly
D) performs all arithmetic operations (for example, addition and subtraction) and all logic operations (such as sorting and comparing numbers)