Where on a Fern Plant Would You Look to Find

Where on a fern plant would you look to find spores?

A) In clusters of sporangia in sori on the sporophyte leaf
B) In clusters of sporangia in antheridia on the gametophyte leaf
C) In clusters of sori in sporangia on the sporophyte leaf
D) In clusters of sporangia in antheridia on the sporophyte leaf
E) In clusters of sori in sporangia on the gametophyte leaf