1. Among the objects found in the excavated temple were small terra-cotta effigies left by supplicants who were either asking the goddess Bona Dea’s aid in healing physical and mental ills or thanking her for such help.

(A) in healing physical and mental ills or thanking her for such help

(B) in healing physical and mental ills and to thank her for helping

(C) in healing physical and mental ills, and thanking her for helping

(D) to heal physical and mental ills or to thank her for such help（A）

(E) to heal physical and mental ills or thanking her for such help

Why not E?

a good question! can't seem to find (in both noun or verb forms) "aid to do something". but find the followings:

from longman: aid somebody in/with (doing) something Mrs Coxen was aided in looking after the children by her niece.

from powerword 2003: An English-Chinese Dictionary is an important aid in learning the English.

comments, please...?