Read the excerpt from "Dream Season."

I looked at my worn brown shoes. I wanted to say that it was my training book. I wanted to tell him that I was training for my dream the same way that Jackie Robinson had trained for his. Jackie had put hours into catching, throwing, and hitting. I was putting hours into writing words, sentences, and paragraphs. I wanted to tell Dad my impossible dream, too. I wanted to tell him how badly I wanted to be a sports reporter for the best newspaper in town. Instead, I sighed and shrugged.

Using background knowledge and the excerpt, the reader can infer that Marcus is

A) insecure about his dream.

B) embarrassed of his dream.

C) worried his dad will forbid his dream.

D) concerned his dad will mock his dream.​