Which of the Following Best Matches the Description

Which of the following best matches the description?
-Pollution from a single pipe or series of pipes.

A) point source
B) water table
C) aquifer
D) septic tank
E) unconfined aquifer
F) confined aquifer
G) aquiclude
H) aquitard
I) point source.
J) in-stream uses
K) water diversion
L) artesian aquifer
M) groundwater mining
N) landfills
O) nonpoint source
P) surface impoundment