Pick the right word in the list that completes the sentence, output the word.
The _____ between the two parties was deep-seated
a. feud
b. clash
c. link
d. alliance
a
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Pick the right word in the list that completes the sentence, output the word.

### Response:
a