Which of the Following Would Be Normal Findings of the Heart

Which of the following would be normal findings of the heart and its surrounding area?
1) The left hilum is about 2 cm higher than the right hilum.
2) Most of the heart shadow is to the right of the sternum.
3) Calcified lymph nodes indicate an adult patient.
4) The cardiothoracic ratio is less than 1:2.

A) 1, 4
B) 2, 3
C) 1, 2, 4
D) 1, 2, 3, 4