Click the Exhibit butt

Click the Exhibit button. Which statement is true about the set variable on line 12？（）

• AThe set variable contains all six elements from the coll collection， and the order is guaranteed to be preserved.
• BThe set variable contains only three elements from the coll collection， and the order is guaranteed to be preserved.
• CThe set variable contains all six elements from the coll collection， but the order is NOT guaranteed to be preserved.
• DThe set variable contains only three elements from the coll collection， but the order is NOT guaranteed to be preserved.