An eighth-grade class tested trash bags to determine how much weight the bags could hold. They filled each bag with baseballs until the bag broke. The box plot below was created using their data.







How many baseballs do the strongest 50% of the tested bags hold?


131 – 133 baseballs


131 – 135 baseballs


135 – 139 baseballs


135 – 150 baseballs