Based on its location on the HR diagram, what can we say about Rigel's mass and lifetime?

A. We cannot give exact values, but it must be more massive than Betelgeuse because it has a higher surface temperature.

B. Its mass is about 5 MSun and its lifetime is about 109 years.

C. Nothing, because it is not on the main sequence.

D. Its mass is about 5 MSun, but we cannot determine its lifetime.

E. Its lifetime is about 109 years, but we cannot determine its mass.