<prompt> A 28 years old female with a history of 8 wks amenorrhoea complains of vaginal bleeding and lower abdominal pain. On USG examination there is gestational sac with absent fetal parts. The diagnosis is:Ectopic pregnancyIncarcerated abortionThreatened abortionCorpus luteum cyst  <response>: Friends, lets consider each option one by one.Option a: i.e. Ectopic pregnancy 