R varies directly as S and inverse as T. When R \equal{} \frac43 and T \equal{} \frac {9}{14}, S \equal{} \frac37. Find S when R \equal{} \sqrt {48} and T \equal{} \sqrt {75}.
<spanclass=′latex−bold′>(A)</span>28<spanclass=′latex−bold′>(B)</span>30<spanclass=′latex−bold′>(C)</span>40<spanclass=′latex−bold′>(D)</span>42<spanclass=′latex−bold′>(E)</span>60