What type of forces bind the substrate to the active site of enzyme?
$\left(\mathrm{i}\right)$ Ionic bonding
$\left(\mathrm{i}\mathrm{i}\right)$ Hydrogen bonding
$\left(\mathrm{i}\mathrm{i}\mathrm{i}\right)$ Van der Waals forces
$\left(\mathrm{i}\mathrm{v}\right)$ Reaction with functional group enzymes

• A

  (i), (ii) and (iv)
• B

  (i), (iii) and (iv)
• Correct answer
  C

  (i), (ii) and (iii)
• D

  (i), (ii), (iii) and (iv)

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