Select the right formula for the straight-line a mortization method: Amortization = (Residual value - Acquisition value) / Asset's lifespan Amortization = Asset's lifespan / (Residual value - Acquisition value) Amortization = Asset's lifespan / (Acquisition value - Residual"value) Amortization = (Acquisition value - Residual value) / Asset's- lifespan

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