People can debate the aesthetic merits of these overwrought, disquieting, sometimes gruesome works of art, but no one can dispute their creators' mastery of the paintbrush as a blunt instrument.
A. but no one can dispute their creators' mastery of the paintbrush as a blunt instrument.
B. but none can dispute their creators' mastery of the paintbrush as a blunt instrument.
C. but not a one can dispute their creators' mastery of the paintbrush as a blunt instrument.
D. but no person can dispute their creators' mastery of the paintbrush as a blunt instrument.
E. but none can dispute to their creators' mastery of the paintbrush as a blunt instrument.