A 30 - year old multiparous woman is found to have a 5 to 6 cm cyst in one ovary the most appropriate line of management would be :
Observation to see if it disappears by itself in three months
Laparotomy and cystectomy
Laparotomy and unilateral salpingo oophorectomy
Laparoscopic aspiration of the cyst
Observation to see if it disappears by itself in three months