Which of the following statements are true for saccharin?
$(A)$ It is a sodium salt and is not soluble in water.
$(B)$ It is much sweeter than cane sugar.
$(C)$ It is of great value for diabetic patients and is excreted as such in urine.
$(D)$ It is harmful.

• A
  $A, B$
• B
  $B, C$
• C
  $C, D$
• D
  $B, D$