The yellow river (huang he river) is sometimes referred to as "china's sorrow." what would be the best explanation for this sad nickname?

a)
it was the site of the communist revolution in 1949.

b)
flooding has caused massive human and property loss over time.

c)
it has re-routed to force people to follow the communist government.
eliminate

d)
the yellow river became dry after construction of the three gorges dam.