If a Company Desires to Create a Unique Cryptocurrency and Launch

If a company desires to create a unique cryptocurrency and launch a new blockchain network to host it.

A) They must use ERC20 standard for the token, clone the Ethereum Virtual Machine, then launch a series of nodes
B) They must use ERC20 standard for the token and can use any open source blockchain tool/system to launch a series of nodes
C) They can both create their own cryptocurrency and launch their own blockchain network with any common open source blockchain tool/system
D) None of the above