Diego, age 28, married Dolores, age 27, in 2018. Their salaries for the year amounted to $66,900 and they had interest income of $1,780. Diego and Dolores' deductions for adjusted gross income amounted to $4,235; their itemized deductions were $22,050, and they have no dependents.

Table for the standard deduction

Filing Status	2018 Standard Deduction
Single	$ 12,000
Married, filing jointly	24,000
Married, filing separately	12,000
Head of household	18,000
Qualifying widow(er)	24,000

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a. What is the amount of their adjusted gross income? $

b. In order to minimize taxable income, Diego and Dolores will take the standard deduction in the amount of $.

c. What is the amount of their taxable income? $

d. What is their tax liability for 2018?

$