Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.

### Instruction:
Determine the cause of the issue described in the following sentence.

### Input:
John is unable to open his bank account.

### Response:
Potential causes of John's inability to open his bank account could include: an incorrect identification, an expired/locked account, a technical problem, or insufficient residence documentation.