Which line represents a reaction with an enzyme? (A or B)

This is what i did 45-5=4040÷4=10so there are 10 white marbles but am not sure is just a question that am not sure

Glucose, also called grape sugar, blood sugar or corn sugar, is among the simplest and one of the primary naturally occurring sugars. produced naturally by plants as the primary photosynthesis product, it is heavily used by living beings as a main energy source and is necessary for cellular respiration. chemically, it is a monosaccharide carbohydrate and serves as a building block for complex sugars like starch.