Assuming the directory /swapdir exists, what is the result of executing the following command? # mkfile 100m /swapdir/file1
A. A 100 megabyte swap file named /swapdir/file1 is created.
B. A 100 megabyte swap file named /swapdir/file1 is added to the existing swap space.
C. The size of the existing swap partition is increased by 100 megabyte using a file named /swapdir/file1.
D. This command fails, because swap space can be created only during the initial installation of the operating system.