Melissa is getting ready for a party where she plans to serve grilled chicken and a raw vegetable salad. she washes her hands, takes the sealed package of chicken from the refrigerator, opens it, and places the chicken on a cutting board to remove the skin and cut it up. she places the chicken pieces in a plastic container of marinade, seals it, and places it in the refrigerator, at the same time taking out the fresh vegetables. she begins chopping them up on her cutting board. which food safety mistake has melissa made?