A group of 20 students had their heights measured. The results are summarized in the table below.
| Height Range (cm) | Number of Students |
|---|---|
| 140-149 | 3 |
| 150-159 | 7 |
| 170-179 | 4 |
Which of the following could be the median height for this group of students?
154
157
165
170
