Why Did the Framers Decide Against a Plural Executive (Two

Why did the framers decide against a plural executive (two or more presidents) or executive council (presidency-by-committee) ?

A) They were familiar with the instability caused by ancient Rome's dual-consul system and how it led to overrepresentation of the poor plebian castes.
B) They feared that a plural executive would increase regional conflicts and lead to civil war.
C) They preferred a single executive who could act quickly without waiting to consult with co-executives.
D) They thought it would be easier for Congress to impeach and remove a single executive.