Which Statement Best Describes How 4^th, 8^th, and 12^th Grade

Which statement best describes how 4^th, 8^th, and 12^th grade U.S. students are achieving in reading on the NAEP?

A) Approximately two-thirds to three-quarters of U.S. students are scoring at the "Basic" level and just over one third are scoring at the "Proficient" level in grades 4, 8, and 12.
B) Approximately 75% of our students in grade 4, 8, and 12 are scoring at the "Basic" level and more than half are scoring at the "Proficient" level.
C) Almost 90% of our students are scoring at the "Basic" level and more than half are scoring at the "Proficient" level in grades 4, 8, and 12.
D) Reading scores are not tested at the 12^th grade level.