What is the correct order for the life cycle of a supermassive star? A. Nebula, Main-sequence, Red Supergiant, Black hole
B. Nebula, Main-sequence, Red Giant, Black hole
C. Nebula, Red Giant, Red Supergiant, White Dwarf
D. Nebula, Main-sequence, Red Supergiant, White Dwarf

Which statement about relative potential energy of electrons is correct? a. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 2 s orbital of the second electron shell. b. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 3 p orbital of the third electron shell. c. an electron in the 3 p orbital of the third electron shell has more potential energy than an electron in the 2 p orbital of the second electron shell.