A young nulliparous woman has 3'd degree of uterovaginal prolapse without any cystocele or rectocele. There is no stress incontinence. The uterus is retroveed. Uterocervical length is 3 inches. All other symptoms are normal. The best treatment plan for her will be :
Shirodkar's abdominal sling
Observation and reassurance till child bearing is over
Shirodkar's vaginal repair
Shirodkar's abdominal sling
Fothergill's operation