You Are Trying to Deliver Water to a Sink in the Tree

You are trying to deliver water to a sink in the tree house in your backyard. You run an old hose from the spigot behind your home, across your yard, and up the tree to a sink inside the tree house. You let water fill the hose all the way to the tree house sink and then leave the hose pressurized overnight, with no water flowing in it. Unfortunately, the hose cannot tolerate high pressure anymore and it springs a leak around midnight. By morning your whole backyard is a swamp. The most likely site for the leak is

A) on the way up the tree-the most vertical portion of the hose.
B) on the ground-the lowest point on the hose.
C) at the spigot-the first point on the hose.
D) at the sink-the highest point on the hose.