The model has 56 of 100 parts shaded to represent 0.56. A model divided into 100 parts. 56 are shaded gray.

Merlin models the solution to 0.56 – 0.40 by shading in black each of the parts he is subtracting from 0.56. Which models the solution?

A model divided into 100 parts. 52 are shaded gray. 4 are shaded black.
A model divided into 100 parts. 56 are shaded gray. 40 are shaded black.
A model divided into 100 parts. 56 are shaded gray. 4 are shaded black.
A model divided into 100 parts. 16 are shaded gray. 40 are shaded black.