meme coin是什么？

问题如下：

A special type of cryptocurrency that is backed by and pegged to a fiat currency is called:

选项：

A.altcoin. B.stablecoin. C.meme coin.

解释：

A stablecoin is designed to maintain a stable value by pegging its value to another asset and is collateralized by a basket of assets, typically a fiat currency, precious metals, or other cryptocurrencies.

稳定币是将自己的价值和一系列的资产相挂钩，通常包括法定货币、贵金属或者其他加密货币等。