If ax^(2)+6xy+3y^(2)-10x+10y-6=0 represe...

If `ax^(2)+6xy+3y^(2)-10x+10y-6=0` represents a pair of perpendicular lines, then `|a|=`

A

(a) 1

B

(b) 4

C

(c) 2

D

(d) 3

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The correct Answer is:

B

NA

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