Which of these sentences is an appropriate paraphrase?

a.
melons are eaten all over the world because of their cool and crisp taste. there are two groups of melon—one is muskmelons and the other is watermelons. they come from different places.
b.
muskmelons and watermelons are two types of melons. although these melons come from different places, they each have managed to gain popularity throughout the world.
c.
melons can be divided into groups: muskmelons and watermelons. muskmelons are from persia and have fibers in their interior while watermelons are from africa and have striped green melons.
d.
melons are a popular fruit in many countries around the world. they are part of the gourd family and can be divided into two groups. one group comes from persia and the other comes from africa.