The equation of ellipse whose distance between the foci is equal to 8 and distance between the directrix is 18, is

• A.            \[5{{x}^{2}}-9{{y}^{2}}=180\]   
• B.            \[9{{x}^{2}}+5{{y}^{2}}=180\]
• C.            \[{{x}^{2}}+9{{y}^{2}}=180\]     
• D.            \[5{{x}^{2}}+9{{y}^{2}}=180\]