Determining cheaper price

Company A sells 60 pens for $15.00, while Company B sells the same type of pens 40 for $8.00.  Which company’s price per pen is cheaper, and what is the price?
A.)  Company A at $0.20
B.)  Company A at $0.23
C.)  Company A at $0.25
D.)  Company B at $0.20
E.)  Company B at $0.25

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