The School Nurse Is Conducting Pediculosis Capitis (Head Lice) Checks

The school nurse is conducting pediculosis capitis (head lice) checks. Which findings would indicate a "positive" head check?

A) White, flaky particles throughout the entire scalp region
B) Maculopapular lesions behind the ears
C) Lesions in the scalp that extend to the hairline or neck
D) White sacs attached to the hair shafts in the occipital area