In what case will Prim's algorithm give S = E as the final result?

1r'Ccf+rutrls- fr' flx < 'PCQ W'iOiC'>( ( f-\) '-"(ffic-{2r)\ I t'.u-,."1J-.i fl Ctr>,-/""--.F{h' b - ')/' t" V; ,^Jt {Wa"4L -r3c,lcll-.ft4t.'r.f, + .t- tht,r-- PgAL,.,,--+pr"r,.r...