Excerpt from Music to My Ears
John Devine

"Just the other day a student named Marcus walked up to me and said, 'yo, homeboy, what it do?'"

"Just the other day a student named Marcus walked up to me and said, 'yo, homeboy, what it do?'"

Which statement BEST explains why this quotation contains slang?
A) The quotation does not contain any slang.
B) The expression "the other day" is not very precise.
C) Marcus makes a deliberate attempt to confuse his teacher.
D) The word choice used by Marcus is informal and nonstandard.