Ross Signs an Instrument Using an "R" with a Circle

Multiple Choice

Ross signs an instrument using an "R" with a circle around it. With this mark for a signature, the instrument is

A) negotiable.
B) nonnegotiable, because an initial does not state the signer's name.
C) nonnegotiable, because an initial is not a signature.
D) nonnegotiable, because a simple initial implies a lack of binding intent.