At Some Point in His Career, the Musician, Prince, Only

At some point in his career, the musician, Prince, only referred to himself as a symbol and signed all of his checks in that manner rather than his legal name, Prince Rogers Nelson. If he signed a check with the symbol, rather than his legal name, would that check have been enforceable?

A) Yes as a signature can be any symbol with an intention by the maker to authenticate the instrument.
B) Yes as long as industry standards recognized his symbol.
C) No as one can only sign an instrument with their legal name.
D) No as an instrument must have some sort of name as a signature.