The efficiency of microwave ovens in destroying the harmful bacteria frequently found in common foods is diminished b...

Hello, I got the answer right but had determined a different conclusion in the stimulus. Is the correct conclusion, "Scientists theorize that salt effectively blocks the microwaves from heating the interior" that is theorized from the subsidiary conclusion that, "the efficiency of microwave ovens in destroying harmful bacteria frequently found in common foods is diminished by the presence of salt in the food being cooked"?