2019 AMC 8 Problem 21

What is the area of the triangle formed by the lines y=5, y=1+x, and y=1-x?

\textbf{(A) }4\qquad\textbf{(B) }8\qquad\textbf{(C) }10\qquad\textbf{(D) }12\qquad\textbf{(E) }16

Full credit goes to MAA for authoring these problems. These problems were taken on the AOPS website.