In Which of the Following Would Loculation of Pleural Fluid

Multiple Choice

In which of the following would loculation of pleural fluid be as likely to occur?
1) Empyema
2) Exudative fluid
3) Hemothorax
4) Congestive heart failure

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