Consider a point \( A(m, n) \), where \( m \) and \( n \) are posit... VIDEO
Consider a point \( A(m, n) \), where \( m \) and \( n \) are positive
\( \mathrm{P} \) integers. \( B \) is the reflection of \( A \) in the line \( y=x, C \) is the
W reflection of \( B \) in the \( y \) axis, \( D \) is the reflection of \( C \) in the \( x \) axis and \( E \) is the reflection of \( D \) in the \( y \) axis. The area of the pentagon \( A B C D E \) is
(1) \( 2 m(m+n) \)
(2) \( m(m+3 n) \)
(3) \( m(2 m+3 n) \)
(4) \( 2 m(m+3 n) \)
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