Select all of the corrections that need to be made to the following sentences.
I raced home after school. When I got home I found that my little brother—who is nine years old was playing in my room. I got really mad however, I did not show it.
A: Place a comma between home and I.
B: Place a semicolon between home and I.
C: Place a dash between old and was.
D: Place a comma between old and was.
E: Place a dash between mad and however.
F: Place a semicolon between mad and however.