题目选项分析

Playwright A is credited with being the first playwright to break the convention of having one character converse with a chorus, by casting two lead actors in a play. Yet, Playwright B, who was born several decades before Playwright A, also incorporates this theatrical device in two of his plays.

Which of the following, if true, best helps to account for the inconsistency noted above?

【选项】Playwright A was not the only playwright of his time to break theatrical conventions.