When we use P$=2,$ what does the following command do$?[$P is the number of processors in the computing environment$]$

$mpiexec $-$np $4--$oversubscribe python$3$ filename.py

$($A$)$ spawns two processes of filename.py with one per processor

$($B$)$ spawns four processes of filename.py with two or more per processor

$($C$)$ spawns four processes of filename.py on a single processor

$($D$)$ None of the Above