Triangle DEF is rotated 90° clockwise about the origin. The image of this transformation is triangle LMN, as shown in the figure. Triangle DEF and triangle LMN with ordered pairs at D negative 1 comma 6, at E 1 comma 3, at F 6 comma 3, at L 6 comma 1, at M 3 comma negative 1, at N 3 comma negative 6.

Which statement is true?

Segment DE is congruent to segment MN.
Segment EF is congruent to segment MN.
∠D ≅ ∠M
∠F ≅ ∠L