contestada

Which of the following is an example of plagiarism?
a.
“Towering genius disdains a beaten path. It seeks regions hitherto unexplored.” - Abraham Lincoln
b.
As Abraham Lincoln said during his Lyceum Address, “Towering genius disdains a beaten path. It seeks regions hitherto unexplored.”
c.
Genius does not like a beaten path, but prefers to go places that have not yet been explored.
d.
Abraham Lincoln once said that true genius seeks regions hitherto unexplored and disdains the beaten path.