Why is the enzyme pectinase added during the manufacture of fruit juices?

The choices can be found elsewhere and as follows:

A.The enzyme pectinase speeds up the breakdown of pectin in fruits, producing more juice.. .
B.The enzyme pectinase enhances the taste of fruit juices, making them more popular.. .
C.The enzyme pectinase speeds up the breakdown of toxins in fruits, producing more juice.

The correct answer would be A. The enzyme pectinase speeds up the breakdown of pectin in fruits, producing more juice. With this, the manufacturer company will get more volume of product from same amount of resource.

They can measure  the amount of energy gained or lost