"Antpool.com" setting up wallet: BTC or BCH?

"Antpool.com" setting up wallet: BTC or BCH?

In www.antpool.com Bitcoin mining pool, when we want to set up a Bitcoin address to which the reward will be sent, there are 2 options: BTC address (Bitcoin Core) and BCH address (Bitcoin Cash). But the Mining Coin is only BTC (please see following figure).

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(1) Do we need to set both BTC and BCH?

(2) What happens if we set only one of BTC or BCH?

http://bit.ly/2DFSAwN

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