Young female, multigravida, presenting with post coital bleeding on examination shows a normal vagina with normal endometrial cavity on USG. Next step in management?

Young female, multigravida, presenting with post coital bleeding on examination shows a normal vagina with normal endometrial cavity on USG. Next step in management?

Pap smear
Colposcopy Biopsy
Cryotherapy
Per vaginal examination

Ans Colposcopy Biopsy