Which of the following reactions are associated with isomerisation reaction?
a. Conversion of glucose-6-Phosphate to Frustose-6-phosphate
b. Conversion of phosphoenol pyruvate to pyruvic acid
c. Conversion of dihydroxy acetone phosphate to glyceraldehyde-3-phosphate
d. Conversion of 3-phosphoglyceric acid to 2-phosphoglycerate
 

• A

  a and b only

• B

  b and c only

• C

  a, b and c only

• D

  a, c and d only