If the personal income tax rate is lowered from 42% to 28%, what is the differential savings for a tax payer having an annual income before tax to the tune of $34500?
Pick one:
A) $ 3500
B) $ 5000
C) $ 4830
D) $ 7000
E) $ 10000

Rationale: "saving = ( 42 - 28 ) % of 34500 = 4830 . answer : c"
Answer: C