Carbon-12 Is the Most Abundant Isotope of Carbon on Earth

Multiple Choice

Carbon-12 is the most abundant isotope of carbon on Earth.Carbon-13 makes up about 1 percent of Earth's carbon atoms and is useful for radio imaging.Which of the following is true?

A) Carbon-13 has more protons than carbon-12.
B) Carbon-13 has more neutrons than carbon-12.
C) Carbon-13 has more electrons than carbon-12.
D) Carbon-13 has an electronic configuration that is different from that of carbon-12.
E) Carbon-13 has an equal number of protons and neutrons.