Which of the Following Statistics Is a Relative Frequency

Which of the following statistics is a relative frequency?

A) Sixty percent of the pedestrians who pass my lemonade stand refuse to make eye contact with me.
B) There have been 44 American presidents.
C) For every proton in the nucleus of an atom, the atom has one electron.
D) One hundred ninety-three people attended my brother's funeral.
E) 42% of those surveyed favored the legislation, 29% opposed it, and another 29% were undecided.