For a test, plz help Which graph shows an exponential function that nears a constant value as x approaches positive infinity and has a y-intercept at (0,3)?

A. X
B. Z
C. Y
D. W

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.