Answer: C
M. pneumoniae infections can involve both the upper and lower respiratory tract . URI symptoms are possible.
Reference
1. Miyashita N, Maruyama T, Kobayashi T, Kobayashi H, Taguchi O, Kawai Y, Yamaguchi T, Ouchi K, Oka M. Community-acquired macrolide-resistant Mycoplasma pneumoniae pneumonia in patients more than 18 years of age. J Infect Chemother. 2010 Jul 31. [Epub ahead of print]
2. Surender Kashyap and Malay Sarkar. Mycoplasma pneumonia: Clinical features and management. Lung India. 2010 Apr–Jun; 27(2): 75–85. (Free full-text here)