In 2005, the ratio of the average annual cost to attend a private university to the average annual cost to attend a public university was the same as it was in 1990. If the average annual cost to attend a public university in 2005 was $11,000, what was the average annual cost to attend private university in that year, to the nearest $1,000?
A.$18,000
B.$24,000
C.$29,000
D.$32,000
E.$34,000
