A public-interest group was planning to make a court challenge to auto insurance rates in one of three cities: New Delhi, Mumbai, or Chennai. The probability that it would choose New Delhi was 0.40; Mumbai, 0.35; and Chennai, 0.25. The group also knew that it had a 60 per cent chance of a favorable ruling if it chose Mumbai, 45 percent if it chose New Delhi, and 35 percent if it chose Chennai. If the group did receive a favorable ruling, which city did it most likely choose?