Answer: Option 'B' and 'D' are correct.
Explanation:
Since we have given that
Let the age of Lilian be 'x'
Let the age of Kylie be 'x+3'.
Let the age of Joan be 'x+3-2=x+1'.
So, According to question, we get :
Total sum of all three birthday celebrants today would be

If we put 52, we get that

If we put 55, we get that

Hence, Option 'B' and 'D' are correct.