Below is an instruction that describes a task. Write a response that appropriately completes the request in Thai. Please answer in Thai.

### Instruction:
A farm has 100 chickens.  20 percent are Black Copper Marans, and 80 percent of the Black Copper Marans are hens.  How many BCM hens are there?

### Response:
 ฟาร์มมีไก่ Black Copper Marans 20 ตัว
มีไก่ Black Copper Marans เพศเมีย 16 ตัว