Certain Cell Types Normally Have Several Nuclei Per Cell

Certain cell types normally have several nuclei per cell. How could such multinucleated cells be explained?

A) The cell underwent repeated cytokinesis but not mitosis.
B) The cell underwent repeated mitosis with simultaneous cytokinesis.
C) The cell underwent repeated mitosis, but cytokinesis did not occur.
D) The cell had multiple S phases before it entered mitosis.