What Are the Domain and Range for the Equation $y=2^{x}$ ?
A) Domain

What are the domain and range for the equation $y=2^{x}$ ?

A) Domain: $(\infty, \infty)$ ; range: $(0, \infty)$
B) Domain: $(\infty, \infty)$ ; range: $(\infty, \infty)$
C) Domain: $(0, \infty)$ ; range: $(\infty, \infty)$
D) $(\infty, \infty)$ ; range: $[0, \infty)$