Which of the following pairs have identical values of bond order ?

(a) Bond order of N2+=9-42=2.5 ;  The bond order of O2+ = 1/2(10-5)=2.5(b) Bond order of F2=10-82=1 ; The bond order of Ne2=0.(c) Bond order of O2=10-62=2 ;  The bond order of B2=6-42=1.(d) Bond order of C2=10-82=2 ; The bond order of N2=10-42=3.