If There Are Ten Different Intermediate Products Produced in Stages

Multiple Choice

If there are ten different intermediate products produced in stages leading to a molecule in a cell,we can expect that there

A) is one enzyme that carries this process through each of the ten stages to the end product.
B) is one enzyme for degradation and another enzyme for synthesis.
C) may not be any enzymes involved if this is a natural cell product.
D) are about ten enzymes,at least one responsible for each step in the metabolic pathway.