An Australian wool farmer sold some wool to a local textile mill for $6. The textile mill spun it into yarn and sold it to Grandma Jones for $11. Grandma Jones runs a stall at the Southbank market where she knits the yarn into a custom tea cosy and sells it for $15. What is the value-added of the wool farmer and Grandma Jones, respectively?
Wool farmer: $6; Grandma Jones: $4
Wool farmer: $4; Grandma Jones: $6
Wool farmer: $11; Grandma Jones: $15
Wool farmer: $11; Grandma Jones: $9
Wool farmer: $6; Grandma Jones: $7