If bar(a)=bar(i)+bar(j)+bar(k), bar(b)=2...

If `bar(a)=bar(i)+bar(j)+bar(k), bar(b)=2bar(i)+3bar(j), bar(c)=3bar(i)+5bar(j)-2bar(k) and bar(d)=bar(k)-bar(j)`, then the ratio of moduli of `bar(b)-bar(a) and bar(d)-bar(c)` is

`2:3`

`1:3`

`3:1`

`4:1`

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