Memory is one of the most important parts in a computer. Which of the following statements about memory definition is wrong?

Memory is one of the most important parts in a computer. Which of the following statements about memory definition is wrong?
A . Memory is relative to external memory, its main feature is fast access rate
B . Memory is also called internal storage, its role is to backup and copy and permanently save the calculation data in the CPU, improve the reliability of the data
C . Memory, also known as main memory, is a storage space that the CPU can directly address and is made of semiconductor devices
D . When the computer is running, the CPU will transfer the data that needs to be calculated into the memory for operation. When the operation is completed, the CPU will transfer the result out. The operation of the memory also determines the stable operation of the computer.

Answer: B