QUESTION 9 The following query select item name, color, sum(quantity) from sales group by cube (item name, color) could be written as: o select item_name, color, sum(quantity 1. C select item_name, color, sum(quantity from sales from sales group by item_name, color group by item_name, color union select item name, sum(quantity) from sales group by item _name union select color, sum(quantity) from sales group by color union select item name, color, sum(quantity) from sales group by item _name union select item name, color, sum(quantity) from sales group by color select item name, color, sum(quantity) select item name, color, sum(quantity) from sales group by item name, color union select item name, sum(quantity) from sales group by item _name union select color, sum(quantity) from sales group by color union from sales group by item name, color union select item_name, color, sum(quantity) from sales group by item _name union select item_name, color, sum(quantity) from sales group by color union select item_name, color, sum(quantity) from sales select sum(quantity) from sales