Whether the scènes-à-faire evidence exclusion for actual copying should extend to all plot elements naturally flowing from a simple formulation of the plot of the original work?

Whether the proper test to determine wrongful appropriation is (a) comparing the original work as a whole to the copied portions in the allegedly infringing work, or (b) assessing fairness only after (i) removing and disregarding original elements deemed to be scènes-à-faire, and (ii) putting material added by the alleged infringer into the comparison?

Whether the scénes-à-faire evidence exclusion for actual copying should extend to all plot elements naturally flowing from a simple formulation of the plot of the original work?