$[52]$ ?The requirements for an instrument to qualify as negotiable

A $.$ ?May be waived by a separate agreement signed by the original parties to the instrument as long as the variations are fair and voluntarily agreed upon.

C $.$ ?May be satisfied by the insertion of a clause in the instrument indicating that the instrument is negotiable.

B $.$ ?Prohibit substitutions or variances from the exact language of the UCC.

D $.$ ?Must be satisfied at least in principle, although the exact language set forth in the UCC may be varied.