Tina used 4 cubes to make a T-shape. She makes larger T-shapes by adding the same number of cubes to the right, to the left, and to the bottom of the T-shape. If she uses 13 cubes to make a T-shape, how many cubes wide will the T-shape be? Think of using objects to solve this problem
A. 9 cubes wide
B. 7 cubes wide
C. 6 cubes wide
D. 8 cubes wide