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After grading the most recent chapter test, a science teacher asks twelve of his 10th grade summer school students how long they studied for the test. Their answers, as well as their corresponding test grades, were recorded on a table and placed on the scatter plot below.

According to the actual data represented in the scatter plot, the student who spent zero hours studying for the test actually earned a corresponding grade of ___ on the test.

A. 3.75

B. 25

C. 52.5