In a certain code language,‘soldier protect country’ is coded as ‘lu mh na’,‘entrepreneur prosper country’ is coded as ‘na ki tu’ and‘soldier entrepreneur vital’ is coded as ‘mh tu sy’.What is the possible code for 'country vital' in that language?

soldier protect country → lu mh na

entrepreneur prosper country → na ki tu

soldier entrepreneur vital' → mh tu sy

So, 'country vital' will be coded as 'na sy'

Thus, correct option is (a).