Why Did the Five-Kingdom System of Classification Fall Out of Favor

Multiple Choice

Why did the five-kingdom system of classification fall out of favor?

A) It was too complex the original two-kingdom system of Linnaeus was more useful.
B) It was too difficult to distinguish plants from fungi and animals from protistans.
C) There were too few monerans to justify their classification at the kingdom level.
D) It did not reflect the actual evolutionary relationships among organisms very well.