6. The histogram below shows the scores for Mrs. Smith's first block class at Red Rock Middle School. Test Scores of Mrs. Smith's First Block Class If an 85 is the lowest score a student can earn to receive a B, how many students received at least a B? Frequency 7 A) 4 C) 6 B) 10 D) 15 29-35 37-44 45-62 53-60 61-68 69-76 77-84 Test Scores 85-92 53.100