Choose the appropriate pair of primers to amplify the following DNA fragment by the polymerase chain reaction (PCR). 5'-GACCTGTGG . . . . . . . . ATACGGGAT-3' 3'-CTGGACACC . . . . . . . . TATGCCCTA-5' Primers P. 5'-GACCTGTGG-3' Q. 5'-CCACAGGTC-3' R. 5'-TAGGGCATA-3' S. 5'-ATCCCGTAT-3'