-size n[cwbkMG]
          File uses n units of space, rounding up.  The following suffixes can be used:

          `b'    for 512-byte blocks (this is the default if no suffix is used)

          `c'    for bytes

          `w'    for two-byte words

          `k'    for Kilobytes (units of 1024 bytes)

          `M'    for Megabytes (units of 1048576 bytes)

          `G'    for Gigabytes (units of 1073741824 bytes)