a C 0 1 1 e Consider the following coefficient matrix that comes from a system of linear equations: If this coefficient 0 b 0 0 0 O d 0 matrix is in RREF, which of the following statements must be true? O A. a = 0, b = 0, d = 0 but c and e can be any number. O B. b = 0, d = 0 but a, c and e can be any number. O C. a, b, c, d and e can be any number. O D. b = 0, c = 0, d = 0, e = 0 but a can be any number. O E. b = 0, d = 0 but a, c and e can be 0 or 1 only. OF. b = 0, d = 0 but a , c and e can be 0 or 1 only