Opal has blood type \(\mathrm{A}^{+}\). If she needs to have surgery that requires a blood transfusion, she can accept blood from anyone who does not have a type B blood factor. How many people donated blood during this drive at City Honors that Opal can accept?

A blood drive at City Honors High School recently collected blood from 140 students, staff, and faculty. Use the results depicted in the Venn diagram below to answer the following exercise.

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Donors = 140 A 8 2 3 50 4 11 B 52 Rh+ 10