Ireally need your ! !

a store is selling two mixtures of nuts in 20-ounce bags. the first mixture has 15 ounces of peanuts combined with five ounces of cashews, and costs $4.25. the second mixture has five ounces of peanuts and 15 ounces of cashews, and costs $6.75. how much does one ounce of peanuts and one ounce of cashews cost?

select one:
a. $0.40 for peanuts and $0.15 for cashews
b. $0.15 for peanuts and $0.40 for cashews
c. $0.12 for peanuts and $0.49 for cashews
d. there is no solution.