When the HCF `(420,130)` is expressed as a linear combination of `420` and `130` i.e.`HCF (420,130)=420x+130y`,the values of `x` and `y`satisfying the above relation are:
(a) x=3,y=1 (b) x=-4, y=13(c) x=4,y=-13, (d) x=2,y=3