All Low-Level Functions on the Address, So Address

Multiple Choice

All low-level functions on the address, so address.send() , address.call.valueQQ, address.callcode and address.delegatecall:

A) are interrupting execution on error, because they throw an exception.
B) continuing execution on error silently, which is the reason why they are so dangerous.
C) returning Booleans to indicate an error during execution.
D) .send() throws an exception, while the other functions are returning Booleans during execution to indicate an error.