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 . . .

Based on the preceding passage, choose your answer for question Who finishes singing the Birthday song ?
Choose from:
(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
The answer is:
(d).