Nelson took her stereo to ABC Stereo for repairs. ABC repaired the stereo at a cost of $150 and informed Nelson that her stereo was ready. Before Nelson came to pick up her stereo, ABC was burglarized and Nelson's stereo was taken. ABC had an adequate alarm system that was working on the night of the burglary, but all the doors and windows were not properly secured. Nelson sued ABC for the cost of the stereo. ABC denied any liability. Decide.