The following taxes were paid by the Browns during the year: real estate taxes on their home, $2,000; state income taxes, $4,500; city sales tax, $2,800; state sales taxes of $400 paid while on vacation to states other than the state in which they resided; state gasoline tax (personal use of automobile), $30; dog licenses, $20; and real estate taxes on the home of Mrs. George Brown, mother of Barney Brown, $1,450. Barney's mother owns her home. In itemizing their deductions, the Browns should claim a deduction of taxes of:. a. $9,960
b. $6,500
c. $9,510
d. $10,380
e. None of these