How is volvox different from paramecium and euglena?

A) Volvox is composed of multiple cells, while paramecium and euglena are both composed of single cells.
B)Volvox uses a different way of moving from both paramecium and euglena.
C)Volvox takes in food from the environment, while paramecium and euglena make their own food.
D)Volvox does not have a nucleus, while both paramecium and euglena do have a nucleus.