Two UFOs, one farther from you than the other, are flying directly towards you at high speed. While studying them through a powerful telescope, you see a flash of blue light emitted from the closer UFO, followed briefly by a flash of green light emitted from the farther UFO (assume that your vision is ultra-sharp, so that you can detect even the smallest interval of time between the flashes). You can conclude that in your frame, Select one: O a. the green light flash was emitted before the blue light flash. O b. the two light flashes were emitted simultaneously. O c. the blue light flash was emitted before the green light flash. O d. there is not enough information to draw a conclusion