One difference between carbon-12 (126C) and carbon-14 (146C) is that carbon-14 has
A) two more neutrons than carbon-12.
B) two more electrons than carbon-12.
C) two more protons than carbon-12.
D) two more protons than carbon-12 and two more neutrons than carbon-12.
E) two more electrons than carbon-12 and two more neutrons than carbon-12.
Answer: A