The correct option is B Asteraceae
A bicarpellary, unilocular ovary with a single ovule at the base is found in Asteraceae. In Asteraceae the pistil consists of two connate carpels. The style has two lobes. Stigmatic tissue may be located in the interior surface or form two lateral lines. The ovary is inferior and has only one ovule, with basal placentation.
Therefore, the correct answer is option B.