34. if a,, a., z and b denote the dirac matrices, then which of the following is correct? (a) = 1, b- -1, trace ß=+1 (b) o--1 p-1, trace b 0 (c) a =1, b =1 trac

34. If a,, a., z and B denote the Dirac matrices, then which of the following is correct? (A) = 1, B- -1, trace ß=+1 (B) o--1 P-1, trace B 0 (C) a =1, B =1 trace ß=0 (D) af =1 B =1 trace ß-1 Where o, is any one of a,, y and a,