Elaine wants to leave her summer home to her sister, Doris. However, Doris's health is uncertain. If Doris dies first, Elaine would like the home to go to her daughter Jane, who will receive the residue of Elaine's estate under the will. Which of the following testamentary clauses would accomplish that goal?

A. I give my summer home to Jane, in trust for Doris.

B. I give my summer home to Doris, is she shall survive me.

C. I give my summer home to Doris, in trust for Jane.

D. I give my summer home to Doris, but it must go to Jane after Doris dies.