Leading or Trailing PE only, remember, question, leading

Foufou

They gave us D1, E1, Retention rate, .... and ask us to calculate to PE of the stock. The only think is that I don't remember at all if it was asked to calculate de trailing or leading PE !!!

I automatiquely did It thinking we had to calculate de leading PE and did : (D1/E1)/k-g

This question is killing me since june 6th ! :-)