Have a look at the flower and pick the right option from the choices given.
Polypetallous
Polyandrous
Gamosepalous
Gamopetalous
Gamopetallous is a condition where the flower's petals are fused together forming a tubelike corolla. The common example would be morning glory.
Petals can by Polypetalous as well as Gamopetalous.
In Solanum nigrum, the gamopetalous corolla is