Johnson, a computer engineer, and spouse, who is unemployed, provide more than half of the support for their child, age 23, who is a full-time student and who earns $7,000. They also provide more than half of the support for their older child, age 33, who earns $2,000 during the year. How many exemptions may the Johnsons claim on their joint tax return?

a)	One personal and two dependency.
b)	Two personal and two dependency.
c)	One personal and one dependency.
d)	Two personal and one dependency.