Suppose the Tax Rate on the First $10,000 of Income

Multiple Choice

Suppose the tax rate on the first $10,000 of income is zero;it is 10% on the next $20,000;20% on the next $20,000;30% on the next $20,000;and 40% on income over $70,000.Family A has an income of $120,000 and Family B an income of $55,000.What is the tax bill of each?

A) $48,000 for A and $16,500 for B.
B) $32,000 for A and $7,500 for B.
C) $34,000 for A and $8,500 for B.
D) $22,000 for A and $6,600 for B.