A rectangular box is to be made from a sheet of 24 inch length and 9 inch width cutting out identical squares of side length $x$ from the four corners and turning up the sides. What is the value of $x$ for which the volume is maximum?

• A

  1 inch
• B

  1.5 inch
• Correct answer
  C

  2 inch
• D

  2.5 inch

Hence, the correct answer is option: 'C'.