13. Refer to the screenshot below. Suppose we want to use the Subtotal feature to create a summary of our sales data that lists the total units sold by each salesperson in January, followed by the total units sold by each salesperson in February, etc. What sort order should be implemented before running the subtotals? 0 Sort by Month Sort by Name Sort by Units Sold Sort by Name, then Month Sort by Month, then Name Sort by Units Sold, then Month 133 akeMay Jake eb EricMarch Jake Jan Bruce June Bruce March 129 John une AlexAp Johe May 143 John March 4Johe March JoheMarch Alex Feb Allan March Allan feb Bruce eb 2Alexune April 4Allan an John March Eric