A Farmer Raises Free- Range Chickens, Which He Sells to a Company

A farmer raises free- range chickens, which he sells to a company for $1000. That company sells the "processed" chickens to a grocery store for $1600, which in turn produces roasted chickens which are sold to the public for $2400. Based on this information, the value of total output is equal to

A) $5000
B) $4000
C) $2400
D) $1600
E) $1400