Select the option which shows the line number where selection is first used in the algorithm below.

1   discount ← 0.0
2   total_price ← 0.0
3   items_count ← USERINPUT
4   FOR i ← 1 TO items_count
5       item_price ← USERINPUT
6       IF item_price > 50.0 THEN
7           discount ← discount + (item_price * 0.15)
8       ELSEIF item_price > 20.0 THEN
9           discount ← discount + (item_price * 0.05)
10      ENDIF
11      total_price ← total_price + item_price
12  ENDFOR