Anna Fritzwater Has Died Leaving Three Children, Bob, Carol and Ted

Anna Fritzwater has died leaving three children, Bob, Carol and Ted. Her fourth child, Alice, died three years earlier. Bob and Carol each have two children. Alice left three children. Suppose Alice's will provided that her heirs were to receive her estate per stirpes.

A) Bob, Carol and Ted each get a one-third interest
B) Bob, Carol, Ted, their children and Alice's children each get a one-tenth interest
C) The lines of Bob, Carol and Ted each get a one-fourth interest to share and Alice's children each get one-twelfth
D) Bob, Carol and Ted each get a one-fourth interest and Anna's grandchildren, including Alice's children, split a one-fourth interest