Doug and Pattie Received the Following Interest Income in the Current

Doug and Pattie received the following interest income in the current year:
Savings account at Greenbacks Bank
$4,000
United States Treasury bonds
250
Interest on State of Iowa bonds
200
Interest on Federal tax refund
150
Interest on state income tax refund
75
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Greenbacks Bank also gave Doug and Pattie a cellular phone (worth $100) for opening the savings account.What amount of interest income should they report on their joint income tax return?

A) $4,775.
B) $4,675.
C) $4,575.
D) $4,300.
E) None of these.