What Is the Correct Symbol for an Alpha Particle?
A) ${ } _ { 1} ^ { 4 } \alpha$

What is the correct symbol for an alpha particle?

A) ${ } _ { 1} ^ { 4 } \alpha$
B) ${ } _ { 2 } ^ { 2 } \alpha$
C) ${ } _ { 4 } ^ { 2 } \alpha$
D) ${ } _ { 2 } ^ { 4 } \alpha$
E) ${ } _ { 0 } ^ { 0 } \alpha$