The Upper Paleolithic, the Last Major Division of the Old

The Upper Paleolithic, the last major division of the Old World Paleolithic, dates to:

A) 10,000 BC to present.
B) 40,000-10,000 BC.
C) 90,000-10,000 BC.
D) None of the answers are correct; the temporal divisions of the Old World Upper Paleolithic vary dramatically in different regions of the Old World.