Упрашиваю помогите срочноChoose the correct variantAfter the Tsunami a lot of

Упрашиваю помогите безотлагательно
Choose the correct variant
After the Tsunami a lot of tourist were grateful ........... Tillys interest in geography. Tillys friends thanked her ........... help.
A) to, for
B) at, to
C) for , to
D) with , for