Which command grows the datavol volume by an additional 30 MB and resizes the file
system at the same time?

A.
vxassist -g datadg growby datavol 30m

B.
vxresize -g datadg datavol 30m

C.
vxresize -g datadg datavol +30m

D.
vxassist -g datadg growto datavol 30m