Which of the following present similar to unruptured ectopic pregnancy
Halban's classical traid:

Delay in normal period followed by spotting
Unilateral pelvic pain 
Small Tender adnexal mass.

This triad is similar to that seen in classic ectopic pregnancy.
Follicular cyst of ovary
Corpus luteum cyst
Polycystic ovary disease
Ovarian torsion