A.
[A] Some enemies died on the road and others jumped into the river frightenedly and were drowned.
B.
[B] There were some enemies who died on the way, and there were some who were frightened into the river and got drowned.
C.
[C] Among the enemy, some died on the road while others leaped into the river and got drowned because of fear.
D.
[D] Of the enemy, some died on the way and some, frightened out of their wits, leaped into the river and were drowned.