If ‘experts find solutions’ is written as `dl ny mu’ in the given code language, then what will ‘rural solutions difficult’ be coded as?

From statement 1 & 3, common word is 'challenges' coded as 'bt'.

From 3 & 4, code for 'difficult = ka'

From 2 & 3, code for 'find = dl'

From above statements, in statement 3, code for 'experts = mu'

Similarly, from 1, code for 'rural = vx'

Now, it is given that code for 'experts find solutions' = 'dl ny mu'

=> Since, we already know codes for experts and find, => code for 'solutions = ny'

Thus, code for 'rural solutions difficult' is any combination of 'ny vx ka'

=> Ans - (A)