Which of the following costs are potentially deductible on Form 1040, Schedule A as taxes for 2020? 1. Property tax on principal residence. 2. Garbage pickup itemized on the real estate bill. 3. Real estate tax on property owned as an investment. 4. Sales tax paid on the purchase of a personal car. Multiple Choice None of the items 2 and 4 1, 3, & 4 All of the items