The correct option is C (i) 3 (ii) 9 (iii) 7
Number of stationery items Boots has = 397
If we expand 397, we get 3 Hundreds + 9 Tens + 7 Ones.
The number of pens, pencils, and books are marked as Hundreds, Tens, and Ones.
Therefore, there are 3 pens, 9 pencils, and 7 books.