Meghan is 16 years old and qualifies as a dependent of her parents. Meghan earned wages of $3,000 and had interest income of $4,000 during 2019. Meghan had expenses of $950 related to producing the interest income. What is Meghan's net unearned income for 2019?

a. $1,800

b. $1,900

c. $2,900

d. $4,000.