Brianna Doesn't Read the Memo That Larry Writes

Multiple Choice

Brianna doesn't read the memo that Larry writes.Which of the following reasons would be an example of physical noise that led to this result?

A) Brianna is too busy to read her mail.
B) The memo was typed on erasable paper, and the ink has smudged.
C) Larry chooses words poorly.
D) Brianna never got a copy of the memo.