An Antibody Was Detected at Immediate Spin and 37° C

An antibody was detected at immediate spin and 37° C that appeared to have anti-Le^b specificity.To confirm the antibody identity and determine if there were other antibodies in the serum,a Lewis neutralization technique was performed.Results of the control are as follows: Reaction with Le(b) positive cells
Patient serum + Lewis substance 0
Patient serum + saline control 1+
What conclusion can be made from these results?

A) anti-Le^b is confirmed
B) the antibody was diluted,therefore no conclusion can be made
C) the antibody was not neutralized,therefore anti-Le^b has not been identified
D) an antibody other than anti-Leb is most likely in the serum