Read the passage from a letter by Christopher Columbus. All these islands are very beautiful, and of quite different shapes, easy to be traversed, and full of the greatest variety of trees reaching to the stars. I think these never lose their leaves, as I saw them looking as green and lovely as they are wont to be in the month of May in Spain.

What evidence of bias exists in the passage?
A. Columbus makes positive comments.
B. Columbus includes detailed information.
C. Columbus shares multiple perspectives.
D. Columbus exaggerates his observations.