To find out how much memory is available, you could type _____ A. EMM B. MEM C. CHKDSK D. MEMMAKER E. None of the above

The correct answer is B. MEM.

MEM is a command-line utility that displays information about the amount of physical and virtual memory available on a computer. It can also be used to configure memory

EMM is a memory manager that was used in MS-DOS to expand the amount of available memory. It is no longer necessary in modern operating systems.

CHKDSK is a command-line utility that checks the integrity of a disk and can also be used to fix errors.

MEMMAKER is a memory management utility that was used in MS-DOS to optimize memory usage. It is no longer necessary in modern operating systems.

None of the above is the correct answer.