You Are Studying a Group of Blue-Headed Wrasse and Mark

You are studying a group of blue-headed wrasse and mark individuals to keep track of their development.One day you notice that a female you had marked when it was young has changed its coloration and is behaving like a male.What is a likely explanation for this?

A) The female is being influenced by the testosterone produced by the male fish in the tank.
B) The female has stopped producing sex hormones.
C) The fish is dioecious and a sequential hermaphrodite.
D) The fish is a simultaneous hermaphrodite.
E) The fish is monoecious, and its gonads are now producing sperm.