The correct option is A True
Two or more compounds with the same formula but a different arrangement of atoms in the molecule and different properties is known as an isomer.For example, butane and isobutane have the same number of carbon (C) atoms and hydrogen (H) atoms, so their molecular formulas are the same. However, each one has a different structural formula which shows how the atoms are arranged. So we can say that butane and isobutane are isomers.