Task: Question Answering
Input (English): Question: The ratio of ducks and frogs in a pond is 35 : 39 respectively. The average number of ducks and frogs in the pond is 152. What is the number of frogs in the pond ?

 Option A: 160

 Option B: 152

 Option C: 156

 Option D: 144

 Option E: None
Output (English): Option A