1. a 35-year-old woman has been very tired, with a low-grade fever and chills. she has a nonproductive cough and runs out of breath easily. results of a chest radiograph show patchy infiltrates. a gram stain of sputum revealed many white blood cells but no bacteria. empirical treatment for walking pneumonia was initiated. results of a cold agglutinin assay were positive. which of the following microbes is most likely the cause of this disease? a. bordetella pertussis b. chlamydophila pneumoniae c. mycobacterium tuberculosis d. mycoplasma pneumoniae e. streptococcus pneumoniae