Mark the correct alternative in each of the following: Area of the triangle formed by the points...

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Mark the correct alternative in each of the following:
Area of the triangle formed by the points \( ((a+3)(a+4), a+3),((a+2)(a+3),(a+2)) \) and \( ((a+1)(a+2),(a+1)) \) is
(A) \( 25 a^{2} \)
(B) \( 5 a^{2} \)
(C) \( 24 a^{2} \)
(D) none of these
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