Which Best Describes Sensitivity

Which best describes sensitivity?

A) Sensitivity is the ability of a measurement to identify individuals who have negative results or who do not have the characteristic.
B) A false-positive result means that the test result was positive but the characteristic was present.
C) A false-positive result means that the test result was negative but the characteristic was absent.
D) Sensitivity is the ability of a measurement to identify the characteristic that is being measured.