While Wading in the Ocean, You Look Down into the Water

Multiple Choice

While wading in the ocean, you look down into the water and notice an umbrella-shaped, translucent animal. It swims by pulsing its body, and long tentacles trail behind it. One of them brushes your leg. Ouch! You feel a burning sensation where it touched you. To what phylum does this creature probably belong?

A) Porifera
B) Cnidaria
C) Platyhelminthes
D) Mollusca