Respuesta :

When n = 1,
Sum = 1

When n = 2,
Sum = 1 + 3 = 4 = 2²

When n = 3, 
Sum = 1 + 3 + 5 = 9 = 3²

When n = 4,
Sum = 1 + 3 + 5 + 9 = 16 = 4²

So when n = n
Sum = n²

Answer: n² (Answer A)

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