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If the sum of first n even natural numbe...

If the sum of first `n` even natural numbers is equal to `k` times the sum of first `n` odd natural number then `k=`
a.`1/n` b. `(n-1)/n` c. `(n+1)/(2n)` d. `(n+1)/n`

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According to the question,
`(K(2n^2​))/2=2⋅(n^2+n​)/2`
`=>n^2(K−1)=n`
`K=(n+1)/n​`
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