In the diagram, how many $1 \times 1$ squares are shaded in the $8 \times 8$ grid?
(A) 53
(B) 51
(C) 47
(D) 45
(E) 49

![](https://cdn.mathpix.com/cropped/2024_04_20_ac36362783317e0251fdg-038.jpg?height=334&width=328&top_left_y=646&top_left_x=1294)
In the diagram, there are 7 rows in which there are shaded squares, and there are 7 shaded squares in each row.

Thus, there are $7 \cdot 7=49$ shaded squares.

ANswer: (E)