Which of the following are the tax categories under the GST? a. 5% b. 10% c. 12% d. 20% e. 28%

Under the Goods and Services Tax (GST) Council slab structure in India, the standard GST tax rate slabs (apart from the 0% exempt category and special precious metal rates) are (a) 5%, (c) 12%, 18%, and (e) 28%, whereas 10% (b) and 20% (d) are not GST slabs in India. Thus, 'a, c, e only' is correct.