If vector vecB is added to vecA the resu...

If vector `vecB` is added to `vecA` the resultant is (6`hati`+1`hatj`) . If `vecB` is subtracted from `vecA`, the resultant is (-4`hati `+ 7`hatj`) ,then magnitude of `vecA` is (A)4.1(B)3.2(C)8.2(D)2

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