What is the best way to rewrite this sentence using the active voice?

My grandfather was given an award by a local college for his book on Lakota history.

a
Lakota history was the subject of a book my grandfather wrote.
b
A local college gave my grandfather an award for his book on Lakota history.
c
My grandfather wanted to be given an award by a local college and so wrote a book.
d
The award my grandfather was given came from a college and was about Lakota history.