Analyzing the following sentences about respiratory tract infections: Pneumonia can also be caused by direct inhalation of material in aerosols in...

Analyzing the following sentences about respiratory tract infections:

Pneumonia can also be caused by direct inhalation of material in aerosols into the lungs. This process is uncommon for most bacterial pneumonias, but is characteristic of Mycobacterium tuberculosis and Bacillus anthracis.
Staphylococcus aureus pneumonia is commonly caused by hematogenous dissemination, especially if an endovascular infection such as endocarditis is present.
The two statements are true propositions, and the second is a correct justification of the first.
The two statements are true propositions, but the second is not a correct justification of the first.
The first statement is true, and the second is false.
The first statement is false, and the second is true.