Task: Question Answering
Input (English): Question: According to a survey conducted in two cities, A and B, 64% of the population is happy with the new president. If the ratio of the city A population to the city B population is 3:2 and the percentage of city A residents who are happy with the president is 70%, what percentage of city B population is happy with the president?

 Option A: 30%

 Option B: 50%

 Option C: 25%

 Option D: 55%

 Option E: 62%
Output (English): Option D