The incorrect option is d.
Prescribing topical steroids and/or oral antihistamines for pruritus is not recommended as a management and treatment strategy for WA. Other strategies such as putting non-washable items in a plastic bag for 1 week, prescribing topical antifungal applications, and prescribing topical antiparasitics are recommended to manage and treat WA. These measures help to prevent the spread of the fungal infection and to keep the patient comfortable. The use of steroid creams or antihistamines is not necessary to treat WA, and may even worsen the rash, so it should be avoided.