just need help wirh problem C.

Complete the curved arrow mechanism of the following double elimination reaction when 2,3-dibromopentane is treated with two equivalents of sodium amide and heated in mineral oil. a) Use three curved arrows to show the b) Use three curved arrows to show the elimination of the first hydrogen bromide. elimination of the second hydrogen bromide. : Br : c) Complete the structure of the organic product formed from the double elimination. The ammonia and bromide ion formed in step 1 is not drawn for clarity