The following passage may contain a problem with verb tenses. Choose the version in which verb tenses are used correctly. If the original passage is correct, select $"$No Errors."

When Jeff Gremmels was a second$-$year medical student, he had seen patients at a clinic every Wednesday. That winter, a fourteen$-$year$-$old patient taught him an important lesson about being a doctor.

When Jeff Gremmels had been a second$-$year medical student, he saw patients at a clinic every Wednesday. That winter, a fourteen$-$year$-$old patient had taught him an important lesson about being a doctor.

No Errors

When Jeff Gremmels was a second$-$year medical student, he saw patients at a clinic every Wednesday. That winter, a fourteen$-$year$-$old patient taught him an important lesson about being a doctor.