It is the powerful compound capsaicin that makes a chili pepper hot; a single drop that has no taste and odor is capable of detection by humans at one part per million.
A
a single drop that has no taste and odor is capable of detection
B
a single drop is detectable, though without taste and odor,
C
a single tasteless and odorless drop can be detected
D
single tasteless and odorless drops are capable of detection
E
single drops that have no taste or odor can be detectable