2) (3 pt) Some light which is coming from the air (n=1) strikes an oil slick (n=1.5) on top of the ocean (n=1.3) traveling straight downward. It reflects off and pick up a strong red (700 nm) tint. You wish to determine the thickness (T) of oil slick that would cause this phenomenon. i. The path length difference for the red light is A. 0 B. 0.5T C. T D. 1.5T E. 2T ii. The path length difference for the red light could be equal to A. 0 B. 0.5?t C. A iii. with A: A. 470 nm B. 540 nm C. 700 nm D. 910 nm E. 1050 nm