Correct Answer - B
`2root(3)(40)implies2xxroot(4)(2xx2xx2xx5)`
`implies2xx2 root(3)(5)`
`implies4root(3)(5)`
`4root(3)(320)`
`implies4xx4root(3)(5)`
`implies16root(3)(5)`
`3root(3)(625)`
`implies3xxroot(3)(5xx5xx5xx5)`
`implies3xx5root(3)(5)`
`implies15root(3)(5)`
Now put in the value in question
`implies 4root(3)(5)-16root(3)(5)+15root(3)(5)-3root(3)(5)`
`implies19root(3)(5)-19root(3)(5)`
`implies0`
