For which distributions is the median the best measure of center? Select each correct answer.

A bar graph with values gradually rising above 30 y then dropping down gradually to 5 y.

A bar graph with a majority of the values measured at 35 y.

A bar graph with values that gradually rise up above 20 y before dropping steeply to below 2 y.

A bar graph with values that steeply rise to 16 y then gradually drop down below 2 y.