Task: Question Answering
Input (English): Question: Calculate the area of a triangle, if the sides are 13 cm, 12 cm and 5 cm, what is its area?

 Option A: 36 cm2

 Option B: 35 cm2

 Option C: 30 cm2

 Option D: 32 cm2

 Option E: 31 cm2
Output (English): Option C