<prompt> Methicillin-resistant staphylococci do not respond to β-lactam antibiotics because:They produce a b-lactamase which destroys methicillin and related drugs.They elaborate an amidase which destroys methicillin and related drugs.They are less permeable to b-lactam antibiotics.None of the above  <response>: Resistance to most penicillins is due to elaboration of beta-lactamase. Methicillin is most resistant penicillin to β-lactamase. Staphylococcus aureus develops resistance to methicillins by acquisition of altered penicillin binding proteins. 