A team of scientists studying a material have determined that 12C, 13C, and 14C occur in the material in a ratio of 1000:10:1. How did they most likely differentiate between these forms of carbon? Please choose the correct answer from the following choices, and then select the submit answer button. Answer choices by the number of neutrons in 12C, 13C, and 14C by the number of electrons in 12C, 13C, and 14C by the number of positrons in 12C, 13C, and 14C by the biomasses of 12C, 13C, and 14C by the number of protons in 12C, 13C, and 14C