 
 <translate> Napkin can avoid a watermark by a cup. Cup may cause watermark if a napkin is not used under it. So the final answer is water mark. <ibo> Napkin nwere ike izere akara mmiri site na iko. Iko pụrụ ịkpata akara mmiri ma ọ bụrụ na ejighị napkin n'okpuru ya. Ya mere azịza ikpeazụ bụ akara mmiri. 