A radioactive nuclide that is used to label blood platelets has 49 protons and 62 neutrons. Which is the symbol of this nuclide?
A
Superscript 49 subscript 62 upper I n.
B
Superscript 62 subscript 49 upper I n.
C
Superscript 49 subscript 111 upper I n.
D
Superscript 111 subscript 49 upper I n.