Light from a vacuum enters a medium with a refractive index of 2, then continues on and enters another medium with a refractive index of 3.5. How would you calculate the final speed of the light?(1 point)
A. c/5.5
B. c
C. c/(3.5 - 2)
D. c/3.5
A. c/5.5
B. c
C. c/(3.5 - 2)
D. c/3.5