[单项选择]

Cooking Oil Fumes Cause Tumor

The leading cause of lung cancer among women in the city was cooking oil fumes while men are more likely to develop the disease from smoking, said medical experts after a five-year research study.
Doctors announced the results yesterday with analysis on some new tendencies in lung cancer. They said patients are younger, especially women.
According to the Shanghai Tumor research Institute, more local residents die of lung cancer in the city than anything else. Following breast cancer, it has the second-highest incidence rate.
"An unhealthy lifestyle is a very important reason for lung cancer," said Dr He Yumin from Shanghai Minshen Traditional Chinese Medicine Tumor Diagnosis and Treatment Center.
He followed 2,276 lung cancer patients for five years. Among them, 1,433 were male.
Smoking causes 70 percent of cases among men while only 18 percent of female patients developed
A. Men are more likely to develop lung cancer than women.
B. Women are more likely to develop lung cancer than men.
C. Patients with lung cancer become older, especially males.
D. Patients with lung cancer become younger, especially females.