Correct Answer - B
`2sqrt(2)+sqrt(2)+1/(2+sqrt(2))-1/(2-sqrt(2))`
`implies2sqrt(2)+sqrt(2)+((2-sqrt(2)-2-sqrt(2))/((2+sqrt(2))(2-sqrt(2))))`
`implies 2sqrt(2)+sqrt(2)+(-2sqrt(2))/(4-2)`
`implies2sqrt(2)+sqrt(2)-(2sqrt(2))/2`
`implies2sqrt(2)+sqrt(2)-sqrt(2)implies2sqrt(2)`
`implies2xx1.4142=2.8284`