A film of soapy water (n = 1.33) on top of a plastic cutting board (n > 1.33) has a thickness of 243 nm. What color is most strongly reflected if it is illuminated perpendicular to its surface? violet (380 nm ≤ λ < 450 nm) blue (450 nm ≤ λ < 495 nm) green (495 nm ≤ λ < 570 nm) yellow (570 nm ≤ λ < 590 nm) orange (590 nm ≤ λ < 625 nm) red (625 nm ≤ λ ≤ 750 nm)