Which correctly compares a jellyfish and a coral?

They are both polyps and only reproduce asexually.
Only the jellyfish is a medusa, and it reproduces in two stages.
They are both medusae, and they reproduce sexually and asexually.
Only the jellyfish is a polyp, and it reproduces in a single stage.

You have trained year for a marathon. in your first attempt to run a marathon, you decide that you want to complete this 26-mile race in 4-5 hours. a. what is the length of a marathon in kilometers (1mile= 1.6 kilometers). b. what would your average speed have to be to complete the race 4.5 hours? give your answer in kilometers per hour.