Answer:
A. mounted upon
Step-by-step explanation:
-Mounted upon refers to putting an object over something else.
-Gotten over or across means to be well after something bad has ocurred to you.
-Prevailed over means that something is superior to something else.
-Equaled in value means to be worth the same.
According to this, the answer is that in the excerpt above, the word surmounted most nearly means mounted upon.