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If one of the lines represented by the equation `ax^(2)+2hxy+by^(2)=0` be `y=mx` then

A

`bm^(2)+2hm+a=0`

B

`bm^(2)+2hm+a=0`

C

`am^(2)+2hm+b=0`

D

`bm^(2)-2hm+a=0`

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