Shakeela is planning to buy a pair of pants that have an original price of $51. The pants are on sale for 50% off and the sales tax is 5%.

Which estimate will give her a close approximation of the price she will have to pay?

A) $50 + $2.50

B) $30 + $1.50

C) $25 + $1.25

D) $45 + $2.50