An art supply store buys a case of \(144\) pens at a wholesale price of \(\$1\) per pen. The pens are then offered for sale at a retail price \(50\%\) greater than the wholesale price. \(100\) of the pens are sold at this new price, and the remaining pens are sold at a \(50\%\) discount from the retail price. What is the store’s approximate profit on the pens, expressed as a percentage of the wholesale cost?
A. \(30\%\)
B. \(40\%\)
C. \(50\%\)
D. \(60\%\)
E. \(70\%\)
Answer: A
Source: Magoosh