选择题
2023 AMC 8 Problem 4: Spiral Grid Primes
The numbers from 1 to 49 are written in the squares of a 7 × 7 grid in a spiral pattern, beginning with 1 at the centre, then 2 to its right, and winding counterclockwise outward as shown. Which of the following is the number of shaded squares that contain a prime number?
2023 AMC 8 第4题：螺旋网格素数
从 1 到 49 的数字以螺旋图案写在 7 × 7 网格的方格中，从中心的 1 开始，然后是右侧的 2，如图所示逆时针向外缠绕。以下哪一个是包含素数的阴影方块的个数
A.
0
B.
1
C.
2
D.
3
E.
4