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In triangle ABC, AB=AC and AL is perpend...

In `triangle ABC`, AB=AC and AL is perpendicular to BC at L. In `triangle DEF`, DE=DF and DM is perpendicular to EF at M. If (area of `triangle ABC`):(area of `triangle DEF`)= 9:25 then `(DM+AL)/(DM- AL)` is equal to:
त्रिभुज ABC में, AB = AC है तथा AL, BC पर L पर डाला गया लम्ब है| `triangle DEF` में, DE = DF है तथा DM, EF पर M पर डाला गया लम्ब है| यदि ( `triangle ABC` का क्षेत्रफल ): (`triangle DEF` का क्षेत्रफल )= 9 : 25 है, तो `(DM+AL)/(DM- AL)` का मान किसके बराबर है ?

A

6

B

4

C

3

D

5

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