When 5 + 6 = 305, 6 + 7 = 425, 7 + 8 = 565, then 8 + 9 = ?  Choose the correct choice from the following answers:
A) 705	B) 735	C) 685	D) 665	E) 725
5 + 6 =&gt; 5 Ã— 6 = 30 =&gt; 30 Ã— 10 + 5 = 305   6 + 7 =&gt; 6 Ã— 7 = 42 =&gt; 42 Ã— 10 + 5 = 425   7 + 8 =&gt; 7 Ã— 8 = 56 =&gt; 56 Ã— 10 + 5 = 565   Then 8 + 9 =&gt; 8 Ã— 9 = 72 =&gt; 72 Ã— 10 + 5 = 725   Answer : 725
<result>E</result>
When 5 + 6 = 305, 6 + 7 = 425, 7 + 8 = 565, then 8 + 9 = ?