What structure difference between starch and cellulose result in differing functions?

Question 4 options:

The bonds between glucose molecules cannot be broken in starch or cellulose, making them both unusable as a source of energy by animal.


The branching structure of starch provides more points for enzymes to break apart glucose molecules, making it easy to digest for animals and release the glucose molecules.


The branching structure of starch makes the molecule stronger and therefor the glucose molecules cannot be released for use.


The branching structure of cellulose allows for easier release of the glucose molecules, allowing for animals to digest for energy.