Give the domain and range.

A relation. An arrow goes from negative 2 to 4, 0 to 0, and 2 to 4.
a.
domain: {4, 0} range: {–2, 0, 2}
b.
domain: {4, 0, 4} range: {–2, 0, 2}
c.
domain: {–2, 0, 2}, range: {4, 0}
d.
domain: {–2, 0, 2}, range: {4, 0, 4}