A 1,000 square meter parcel of land is bought for \$300,000 and then divided into five equally sized plots. The first four plots are then sold at a price of \$320 per square meter. If the overall profit is to be at least 20\%, what is the minimum selling price of the fifth plot?
(A)\$64,000 (B)\$68,000 (C)\$80,000 (D)\$96,000 (E)\$104,000
E