Which of the following statements concerning the standard normal curve is/are true (if any)?

AThe area under the standard normal curve to the left of -3 is zero.

BThe area under the standard normal curve between any two z-scores is greater than zero.

CThe area under the standard normal curve between two z-scores will be negative if both z-scores are negative.

DThe area under the standard normal curve to the left of any z-score is less than 1.

Aa, b

Bb, d

Ca, c

Da