11. By the end of last year, 76 antibodies (name with~mab) have been approved by the US Food and Drug Administration (FDA) for the treatment of human diseases. What is the molecular weight range of these antibodies (most of them if not all)? (A) 5 kDa to 9 kDa (B) 10 kDa to 30 kDa (C) 40 kDa to 80 kDa (D) 90 kDa to 120 kDa (E) 130 kDa to 180 kDa