W4表的personal allowance worksheet的前两项: A Enter “1” for yourself if no one else can claim you as a dependent A B Enter “1” if: ● You are single and have only one job; or ● You are married, have only one job, and your spouse does not work; or ● Your wages from a second job or your spouse’s wages (or the total of both) are $1,500 or less. 按这两项算下来allowance应该是2了。可是我印象中单身工作的allowance应该是1? 请问那个数字更权威?