In the first and second statements, the common word is 'Juice' and the common code word is 'see'.
So 'see' means 'Juice'.
In the second and third statements, the common word is 'is' and the common code is 'lee'.
So, 'lee' means 'is'.
Thus, in the second statement, the remaininig word 'sweet' is coded as 'kee'.
Hence the answer is (b).