Which One of the Following Statements Best Reflects the Recommendation

Which one of the following statements best reflects the recommendation in the textbook regarding the assignment of criterion-referenced or norm-referenced grades?

A) Assign criterion-referenced grades at the elementary level, but assign norm-referenced grades at the high school level.
B) Assign criterion-referenced grades in the lower elementary grades and in all low-ability classes; assign norm-referenced grades in high-ability classes at the upper elementary and secondary grades.
C) Assign criterion-referenced grades at all grade levels to the extent that such is possible.
D) Assign norm-referenced grades at all grade levels to the extent that such is possible.