The correct choice is (b) Gynandrous
To explain: Gynandrous is a condition where stamen attached to carpels. It is mainly found in calotropis. In epiphyllous stamen attached to the perianth, found in the Liliaceae. The condition where stamen attached to pistil is called epipetalous e.g. sunflower. Synandrous is the condition of attachment of anthers of different stamens.