Externally Owned Accounts:

Externally Owned Accounts:
A . can be destroyed using the selfdestruct keyword. This way all remaining ether will be sent to the receiver address, regardless if they have a fallback function or not.
B . are bound to a private key which is necessary to sign transactions outgoing from that account.
C . are logical opcodes running on the ethereum blockchain very similar to smart contracts.

Answer: B