She gets up early to prepare breakfast so that her children can come to school on time.

A Despite her getting up early to prepare breakfast, her children cannot come to school on time.

B Because she wants her children to come to school on time, she gets up early to prepare breakfast.

C If she does not get up early to prepare breakfast, her children will not come to school on time.

D Unless she gets up early to prepare breakfast, her children will not come to school on time.