$3$M$\text{'}$s Cubitron II$,$ described as $"$an industrial abrasive that cuts faster, lasts longer, sharpens itself, and requires less elbow grease than any other abrasive on the market," is an example of a$($n$)$

a$.$

imitation of a competitor's product.

b$.$

novel innovation.

c$.$

incremental innovation.

d$.$

innovation created through a cooperative strategy.