Graph the Linear Function and Give the Domain and the Range

Multiple Choice

Graph the linear function and give the domain and the range. If the function is a constant function, identify it as such.
- $h(x) =4$

A) $\mathrm { D } = \{ 4 \} , \mathrm { R } = ( - \infty , \infty )$
constant function

B) $\mathrm { D } = ( - \infty , \infty ) , \mathrm { R } = \{ 4 \}$
constant function

C) $\mathrm { D } = \{ 4 \} , \mathrm { R } = ( - \infty , \infty )$
constant function

D) $\mathrm { D } = ( - \infty , \infty ) , \mathrm { R } = \{ 4 \}$
constant function