Using the class interval frequency table below, identify the lower class limit of the last class interval.

# completed tasks	frequency	Relative frequency
0-9	2	0.07
10-19	3	0.11
20-29	5	0.18
30-39	4	0.14
40-49	5	0.18
50-59	6	0.21
60-69	3	0.11
	N=28

Group of answer choices

50

60

59

69