Where on the H-R Diagram Would We Find Stars That

Where on the H-R Diagram would we find stars that look red when seen through a telescope?

A) only near the top of the diagram and never near the bottom
B) only near the left side of the diagram and never near the right
C) only on the right side of the diagram and never on the left
D) only near the bottom of the diagram and never near the top
E) anywhere in the diagram