Exercise 3-17 (Algorithmic) (LO. 2) Sam and Abby are dependents of their parents, and each has income of $4,650 for the year. Sam's standard deduction for the year is $1,100, and Abby's is $5,000. Because their income is the same, what causes the difference in the amount of the standard deduction? Sam's $4,650 is income, and Abby's $4,650 is income