What can be inferred correctly from the following?

"Science is based on experiment, on a willingness to challenge old dogma, on an openness to see the universe as it really is. Accordingly, science sometimes requires courage at the very least the courage to question the conventional wisdom."

A. Premise: Science sometimes requires courage.
B. Premise: Science is based on experiment, as a willingness to see the universe as it really is.
C. It is merely an Illustration.
D. Conclusion: Science sometimes requires courage.
E. Conclusion: Science is based on experiment, on a willingness to see the universe as it really is.

Choose the correct answer from the options given below: