11. In a classroom there are 6 students who are 5 feet tall, 2 students who are 43 feet tall, 4 students who are 4 feet tall, and 2 students who are 6 feet tall. Which expression represents the mean height of the students in the classroom? A (0) B C 6(51)+2(43) +4(44) + 2(6) 6x2x4x2 6(5½) + 2(43) + 4(41) + 2(6) 6+2+4+2 6(41) + 2(53) + 4(61) + 4(6) 6+2+4+2 ​