Use the Intercept Form to Find the Equation of the Line

Use the intercept form to find the equation of the line with the given intercepts.The intercept form of the equation of a line with intercepts (a,0) and (0,b) is? $\frac { x } { a } + \frac { y } { b } = 1 , a \neq 0 , b \neq 0$ . ?
X-intercept: (3,0)
Y-intercept: (0,9)
?

A) $3 x + 9 y - 27 = 0$
B) $9 x + 3 y - 27 = 0$
C) $3 x + 9 y + 27 = 0$
D) $9 x + 3 y + 27 = 0$
E) $$9 x - 3 y - 27 = 0$$