Step 1: Read the situation.
The court is looking at the pleadings (the written claims filed by the parties). It finds some statements that are not needed and that could harm or delay a fair trial. We must decide what the court can do about these statements.
Step 2: Know what pleadings are for.
Pleadings exist only to tell the court the real points in dispute. They should contain useful and material facts. Extra, scandalous, frivolous or vexatious lines do not help. They only confuse the case and waste time.
Step 3: Find the right rule in the CPC.
Order VI Rule 16 of the Code of Civil Procedure, 1908 deals with exactly this. It allows the court to strike out or amend any matter in a pleading that is unnecessary, scandalous, frivolous or vexatious, or that may prejudice, embarrass or delay a fair trial, or that is an abuse of the process of the court.
Step 4: See when this power can be used.
The court can use this power at any stage of the proceedings. It can act on its own or when a party asks. There is no rule that it must wait until the trial begins. So the timing is flexible.
Step 5: Apply the rule to our facts.
Here the statements are unnecessary and can prejudice or delay the fair trial. These are the very words of Order VI Rule 16. So the court may simply strike out those parts.
Step 6: Check the wrong options.
Option (B) is wrong because the power is not limited to after trial begins. Option (C) is wrong because the court passes a proper order, it does not just ignore the lines. Option (D) is wrong because a few bad lines do not justify throwing out the whole plaint. So the correct choice is to strike out such pleadings at any stage.
\[ \boxed{\text{Strike out such pleadings at any stage of proceedings.}} \]