Alan and Sara Winthrop are a married couple who file a joint income tax return. They have two children, and they have legitimate itemized deductions totaling $25,750. Their total income from wages is $224,500. Assume the following tax table is applicable:

Married Couples Filing Joint Returns

If Your Taxable Income Is	You Pay This Amount on the Base of the Bracket		Plus This Percentage on the Excess over the Base	Average Tax Rate at Top of Bracket
Up to $19,750	$0.00		10.0%	10.0%
$19,750-$80,250	1,975.00		12.0	11.5
$80,250-$171,050	9,235.00		22.0	17.1
$171,050-$326,600	29,211.00		24.0	20.4
$326,600-$414,700	66,543.00		32.0	22.8
$414,700-$622,050	94,735.00		35.0	26.9
Over $622,050	167,307.50		37.0	37.0

What is their marginal tax rate?

a. 32.0%

b. 12.0%

c. 22.0%

d. 35.0%

e. 24.0%