<prompt> Which one of the following drugs is used for fetal therapy of congenital adrenal hyperplasiaHydrocortisonePrednisoloneFludrocortisoneDexamethasone  <response>: These patients with congenital adrenal hyperplasia require lifelong treatment.Patients with salt wasting and virilizing forms should be treated with hydrocortisone10-15 mgm2dayand fludrocortisone 0.1mgday.After completion of growth, synthetic glucocorticoid preparations dexamethasone, prednisolonecan be used 