The correct option is A I alone is sufficient while II alone is not sufficient
In the two statements given in I, the common words are 'But', 'None', 'And' and the
common code words are 'Ne', 'Pa', ,'Lo'. So, 'Ne', 'Pa' and 'Lo' are codes for 'But', 'None' and 'And'. Thus, in the first statement, 'Sic' is the code for 'No'.