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Adam bought 23 pencile ,15 earasers a...

Adam bought 23 pencile ,15 earasers and 20 sharpeners form a stationery shop and spet a total of $111.Bob bought 12 earseras , 4 pencils and 7 sharpeners form the same stationery shop and spent $51.What is the price of 1 pencil, 1 earser and 1 sharpener, respectively ?

A

$4,$2,$1

B

$5,$1,$2

C

$2,$5,$2

D

$2,$3,$1

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