primary source

1) Which of the following is least likely to be a primary source?
A. a short story
B. an autobiography
C. a news article
D. a diary

2) Which type of writing would qualify as a primary source?
A. an encyclopedia entry
B. a history textbook
C. a review of someone's biography
D. a ship captain's log

3) Which statement is true of primary sources?
A. All primary source documents are reliable.
B. Some primary sources are more reliable than others.
C. All primary sources are unreliable.
D. All primary sources are published material.

Here is what I think, but not sure???
1: a
2: d
3: b