You are given a geometric mathematical question. Questions in this task often involve shapes and Geometric Relationships. You are also given 4 or 5 answer options (associated with "A", "B", "C", "D", "E"). Do not generate anything else apart from one of the following characters: 'A', 'B, 'C', 'D', 'E'. LaTeX mathematical format (the standard way to express mathematical expressions in the typesetting software known as LaTeX) is used to express equations. Each question is solvable with high school math knowledge.

[Q]: If A (2, -1) and B (4, 7) are the endpoints of a diameter of a circle, what is the area of the circle?
(A)\(16\pi\) (B)\(17\pi\) (C)\(18\pi\) (D)\(144\pi\) (E)\(1156\pi\)
[A]: B


[Q]: If the lengths of the sides of a certain triangle are a, b, and c, which of the following statements could be true?
(A)\(c = b + a\) (B)\(c = b - a\) (C)\(c = 2a + b\) (D)\(c + 2 = a + b + 3\) (E)\(c + 3 = a + b + 2\)
[A]: E


[Q]: A triangle has a perimeter of 16 and one side of length 4. If the lengths of the other two sides are equal, what is the length of each of the other two sides?
(A)5 (B)6 (C)7 (D)8 (E)9
[A]:
B