Pick up the main PLC's components

PLCs span a wide range of sizes, but all contain six basic components:

• processor or central processing unit (CPU);
• rack or mounting;
• input assembly;
• output assembly;
• power supply;
• programming unit, device, or PC/software

Choices  A & E and F

As the answers of experts

Except B. EEPROM, All of them are main PLC's components 

A.In put module

C. ROM & RAM

D. Communication interface

E. CPU (Central Processing Unit)

F. Out put module

Programmable Logic Controllers have three components. These three PLC components are: processor, power supply, and an input/output (I/O) section.

So: A,E and F 

It is choices (E) CPU, (A) Input module, and (F) Output module

A.In put module

E. CPU (Central Processing Unit)

F. Out put module

 as i learned from experts

input module, eeprom, cup, output module, communication interface.

All Of them are correct component

All of them are PLC components, one way or other, depending what is the scope of design.