Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to say happy birthday in japanese [title] Tell friends " tanjoubi omedetou. [step] " this is a casual, informal way of telling someone " happy birthday. " [substeps] Only use this expression with people you are familiar with and those whom you are able to speak informally.

Ending1: Generally speaking, this includes friends, most classmates, most children, and most siblings or younger cousins. Avoid using this with anyone who has a higher status than you, such as a teacher, supervisor, stranger, or elder. Ending2: This is a kind way of saying " congratulations. " do not use this expression with strangers. Ending3: Tanjoubi is not an informal way of expressing your happiness. It is sarcastic, so it should not be used with strangers. Ending4: If you do not know who to tell, say " congrats, nascco. " this is a more informal way of saying tanjoubi as opposed to addressing someone by a nickname.

Answer format: ending1/ending2/ending3/ending4