What command can be used to create a ZFS volume called test from the space on $/$dev$/$sdb and $/$dev$/$sdc that functions like RAID level $1?$

a$.$ zpool create test $/$dev$/$sdb $/$dev$/$sdc

b$.$ zpool create test mirror $/$dev$/$sdb $/$dev$/$sdc

c$.$ zpool create test raidz $/$dev$/$sdb $/$dev$/$sdc

d$.$ zpool create test raidz$2/$dev$/$sdb $/$dev$/$sdc