Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What is the authority who set the budget limit (£m) at 900?

### Inputs:
table_name: table, columns: ['Authority', 'Rate or precept', 'Budget limit (£m)', 'Budget plans (£m)', 'Rate limit (p)', 'Rate change (%)', 'Desired rate (p)', 'Desired rate change (%)']

### Response:
SELECT Authority FROM table WHERE Budget limit (£m) = 900