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

### Instruction:
what is the c (nf/km) when the l (mh/km) is 0.6099?

### Inputs:
table_name: table, columns: ['Frequency (Hz)', 'R (Ω/km)', 'L (mH/km)', 'G (μS/km)', 'C (nF/km)']

### Response:
SELECT C (nF/km) FROM table WHERE L (mH/km) = 0.6099