The song , once interrupted , seems too heavy to lift again , and only Eddie 's mother 's voice , shaking in its solitude , is able to continue . " Happy birthday dear Ed - die . . .
Who finishes singing the Birthday song ?
Pick the best answer from the following options:
A. The Birthday Boy 's Girlfriend
B. The Brother of the Birthday Boy
C. The Sister of the Birthday Boy
D. The Birthday Boy 's Parent


D