Who was the first woman to have four country albums reach No. 1 on the Billboard 200?
Carrie Underwood.
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: Who was the first woman to have four country albums reach No. 1 on the Billboard 200?
### Input: 
### Response: Carrie Underwood.