Mary Had a Z-Score of Zero on the Graduate Record

Multiple Choice

Mary had a z-score of zero on the Graduate Record Examination and a percentile rank of 50 on the Law School Aptitude Examination.We can say

A) she failed both examinations.
B) she failed the GRE but not the LSAT.
C) she did better on GRE than on LSAT.
D) she did better on LSAT than on GRE.
E) she did equally well on LSAT and GRE.