Please answer I don't understand.

The box plot shows the times for sprinters on a track team.

A horizontal number line starting at 40 with tick marks every one unit up to 59. The values of 41, 43, 49.5, 56, and 58 are all marked by the box plot. The graph is titled Sprinters' Run Times, and the line is labeled Time in Seconds.

Which value does 50% of the data lie above, and what is it called?

58, the median
56, the upper quartile
43, the lower quartile
49.5, the median