What Are Physiological Measures of Attitudes Such as Heart Rate

What are physiological measures of attitudes such as heart rate and perspiration more likely to show?

A) Physiological measures are more likely to show social desirability bias.
B) Physiological measures are more likely to reveal the intensity of an attitude.
C) Physiological measures are more likely to reveal whether an attitude is positive or negative.
D) Physiological measures are more likely to show overt stereotypes.