Verbal Classification

Reverse the process and translate an English word into the artificial language..

Here are some words translated from an artificial language. 
Granamelke means big tree 
Pinimelke means little tree 
Melkehoon means tree house.

Which word could mean "big house"?

              a. granahoon                                          b. pinishur
              c. pinihoon                                             d. melkegrana

Watch this space for answer in a week.