Methicillin resistant Staphylococcus aureus can be detected in clinical specimens by the use of probes and polymerase chain reactions by detection of
a. the mecA gene encoding for PBP2a in the cell wall.
b. the erm gene code for the methylation of the 23S rRNA.
c. the msrA gene code for efflux mechanism.
d. None of the above.
