For the ellipse $49x^2+36y^2=1764$, what are $a$, $b$, the direction of the major axis (horizontal or vertical), and the foci coordinates?

• A. $a=7$, $b=6$major axis verticalfoci at ($0$, $\pm \sqrt{13}$)
• B. $a=7$, $b=6$major axis horizontalfoci at ($\pm \sqrt{13}$, $0$)
• C. $a=6$, $b=7$major axis horizontalfoci at ($\pm \sqrt{13}$, $0$)
• D. $a=36$, $b=49$major axis verticalfoci at ($0$, $\pm 13$)

Answer: (A)