Choose from the following /etc/snapmirror.conf entries one which will not support synchronous SnapMirror.

A.
FilerA:source_vol FilerB:destination_vol ?0-55/5 * * *

B.
FilerA:source_vol FilerB:destination_vol visibility_interval=1hr, outstanding=3ms, cksum=crc32 sync

C.
FilerA:source_vol FilerB:destination_vol outstanding=3s sync

D.
FilerA:source_vol FilerB:destination_vol – sync