Mridula has written following statements about the metric unit she would use to measure the same objects. Find the incorrect sentence among the following sentences: P: Centimetre is used to measure the length of a pencil. Q: Kilometre is used to measure distance from one city to another. R: Kilogram is used to measure depth of a bucket. S: Metre is used to measure height of a tree.

• A.  Q                               
• B.  R
• C.  S                                
• D.  P