請教大大PP DS的題意，看不懂藍色部分

Which of the following lists the number of points at which a circle can intersect a triangle?

(A) 2 and 6 only

(B) 2, 4, and 6 only

(C) 1, 2, 3, and 6 only

(D) 1, 2, 3, 4, and 6 only

(E) 1, 2, 3, 4, 5, and 6

呵呵

我懂了

感謝以上大大的解惑