Kizspy | Question: 11
(Choose 1 answer)
Which of the followings is correct statement used to add an additional column to dataset in R?
A. sales%per_order <- sales$sales_total/sales$num_of_orders
B. sales+per_order <- sales$sales_total/sales$num_of_orders
C. addcol(per_order) < sales$sales_total/sales$num_of_orders
D. sales$per_order <- sales$sales_total/sales$num_of_orders
