What are the domain and range of f of x is equal to 2 times open paren 3 to the x th power close paren ?
A
domain: open paren negative infinity comma infinity close paren ; range: open paren 0 comma infinity close parenB
domain: open paren 2 comma infinity close paren ; range: open paren negative infinity comma infinity close parenC
domain: open paren negative infinity comma infinity close paren ; range: open paren 2 comma infinity close parenD
domain: open paren 0 comma infinity close paren ; range: open paren negative infinity comma infinity close paren