Please help its for my brother in 3rd grade :) Which equation represents the area of the whole shape?

An array of squares has 13 rows and 10 columns. The outline of a rectangle encloses the squares in the third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, and eleventh rows and third and fourth columns. The outline of a second rectangle encloses the squares in the third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, and eleventh rows and fifth, sixth, seventh, and eighth columns.

A.

9×6=9+6+2+4=(9+6)+(2+4)

B.

9×6=9×9×6×6=(9×9)×(6×6)

C.

9×6=9×(2+4)=(9×2)+(9×4)

D.

9×6=(9+6)+(9+2)=(6+9)×(2+9)