Which two statements are true about multipart upload?
1) Individual object parts can be as small as 10 MiB or as large as 50 GiB
2) While a multipart upload is still active, you cannot add parts even if the total number of parts is less than 10,000
3) The maximum size for an uploaded object is 10 TiB
4) You do not have to commit the upload after you have uploaded all the object parts