Ralph is single and reports the following items for 2019: $9,000 Nonbusiness capital gains Nonbusiness capital losses (3,000) Interest income 6,000 Itemized deductions (none of the amount resulted from a casualty loss) (10,000) In calculating Ralph's net operating loss and with respect to these amounts only, what amount must be added back to taxable income (loss)? Oa. $0 Ob. $3,000 Oc. $2,000 Od. $200 Oe. None of these choices are correct