Davis's Teacher Has Assigned the Class to Complete Some Two

Davis's teacher has assigned the class to complete some two digit addition problems. The assignment is to complete each of the problems on the board, to draw a picture representation of four of the problems, and to create an addition problem. After assigning the task to the class, David's teacher quietly tells him to complete half of the problems on the board and not to worry if his pictures are not colored; the important thing is to work the math calculations. This is an example of

A) UDL.
B) differentiated instruction.
C) multilevel instruction.
D) assistive technology.