Which of the following two can be considered valid justifications for treating memory operations as equivalent to I$/$O operations with external devices. Select both that are applicable.

Memory can be removed and replaced, just like external devices.

Memory addressing and data movement type instructions can be used to perform I$/$O operations.

Both memory and $\frac{1}{0}$ operations are controlled by the processor over the system or processor bus.

Memory and I$/$O modules are accessed by the processor, making them important for the computer system.