Provide an Appropriate Response $z$ -Score Is Negative, the Area to Its Right Is Greater

Provide an appropriate response.
-Which of the following statements concerning areas under the standard normal curve is/are true?
a. If a $z$ -score is negative, the area to its right is greater than $0.5$
b. If the area to the right of a $z$ -score is less than $0.5$ , the $z$ -score is negative.
c. If a $\mathrm { z }$ -score is positive, the area to its left is less than $0.5$

A) $a , b$
B) $a$
C) b, c
D) $a , c$