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If the point of intersection of the lines `2ax+4ay+c=0` and `7bx+3by-d=0` lies in the 4th quadrant and is equidistant from the two axes, where a, b, c and d are non-zero numbers, then `ad:bc` equals to

A

`2:3`

B

`2:1`

C

`1:1`

D

`3:2`

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