Mock AMC 8 #1 - Problem 3

let \triangle ABC be a right triangle, with \angle C = 90^{\circ}. If AB = 5 and AC = 4, find the area of \triangle ABC.

(\textbf{A})\;4\quad(\textbf{B})\;8\quad(\textbf{C})\;5\quad(\textbf{D})\;10\quad(\textbf{E})\;6

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