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Let A=[{:(,3x^(2)),(,1),(,6x):}], B=[a,b...

Let A=`[{:(,3x^(2)),(,1),(,6x):}], B=[a,b,c] and C=[{:(,(x+2)^(2),5x^(2),2x),(,5x^(2),2x,(x+1)^(2)),(,2x,(x+2)^(2),5x^(2))]:}`
where, a,b c and `x in R`, Given that tr (AB)=tr(C ). Then the value of (a+b+c)

A

7

B

2

C

1

D

4

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A
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