Correct Answer - B
`(3sqrt(12))/(2sqrt(28))-:(2sqrt(21))/(sqrt(98))`
`implies(3xx2xxsqrt(3))/(2xx2xxsqrt(7))-:(2xxsqrt(3)xxsqrt(7))/(7sqrt(2))`
`implies (3xx2xxsqrt(3))/(2xx2xxsqrt(7))xx(7xxsqrt(2))/(2xxsqrt(3)xxsqrt(7))implies(3sqrt(2))/4`
`implies (3xx1.414)/4=1.0605`
Approx `=1.0606`
