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

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

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

Correct Answer:

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