The Manager at Nielson's Paper Purchased a New Upgraded Machine

The manager at Nielson's Paper purchased a new upgraded machine with an initial investment of $409,000 and forecasted an increase in expected average annual after-tax operating income of $34,400.
Required
Compute the accrual accounting rate of return (AARR) .

A) AARR=0.065,or 6.5% per year
B) AARR=0.074,or 7.4%per year
C) AARR=0.056,or 5.6% per year
D) AARR=0.084,or 8.4% per year
E) AARR=0.102,or 10.2% per year