Which statement is true about the proteins found in different organisms?

the proteins of different organisms are different, but they are all made of the same set of 20 different parts.

the same proteins are found in all different organisms.

all animals have the same proteins and all plants have the same proteins, but animal proteins are different from plant proteins.

proteins are made of 20 different parts, but only 10 parts are found in animals while the other 10 are found in plants.