How can you use the periodic table to find the number of protons in one atom of an element?
 A: The number of protons is the same as the atomic number of the element. 
 B: The number of protons is the same as the atomic weight of the element. 
 C: The number of protons can be found by subtracting the number of electrons from the number of neutrons. 
 D: The number of protons cannot be determined from the information of the periodic table.