Lucie likes consuming candy (c) and fruit (f), and dislikes consuming plastic packaging (p), and has rational preferences over bundles (c, f, p). No matter how many units of each good she has, Lucie is always willing to exchange one piece of fruit for one piece of candy (and vise versa), and always has to be compensated by an extra piece of fruit for every piece of plastic packaging she has to consume.

At Lucie's local supermarket, each candy is wrapped in 2 pieces of plastic packaging, and so is each piece of fruit. Her income is $60 and each (wrapped) piece of fruit and (wrapped) candy costs $4. When she chooses optimally, Lucie consumes _ pieces of candy, _ pieces of fruit, and _ pieces of plastic packaging. Show working/explanation for your answer.