Three women who secretly buried an 80-year-old woman were put into prison at Birmingham yester day. Two of them, including the dead woman's daughter, kept on collecting her pension (退休金) after her death until their secret was made known to others two years later. The court (法庭) heard that one of the women put on "an Oscar (奥斯卡金奖)—winning performance" by pretending to be the old woman asleep in bed when a social worker called five mouths after Mrs. Townsend's death.
Of the three women that buried Mrs. Townsend secretly, one was ______.

A. her neighbor
B. her nurse
C. a social worker
D. her daughter