A student weighs 29 apples and records the observations in the graph below. A bar graph with a heading that reads 'Masses of Apples.' The label for the x-axis reads 'Mass (kg)' and measures from 0 to 0.18. The label for the y-axis reads 'Number of Apples' and measures from 0 to 15. The coordinates for the bars on this graph are as follows: (0.10-0.12, 3), 0.12-0.14, 7), (0.14-0.16, 13), (0.16-0.18, 6). Based on the graph, what is the least likely mass of an apple chosen randomly?