The correct option is
A Liliaceae
The give floral formula belongs to the Liliaceae family. In Liliaceae, the flower is actinomorphic (radial symmetry), bisexual, 6 perianth leaves which are arranged in two whorls of 3 each, 6 stamens which are arranged in two whorls of 3 each and they are polyandrous (all stamens are free), Gynoecium is tricarpellary, syncarpous, ovary superior, trilobed stigma and axile placentation.
So, the correct answer is 'Liliaceae'.