40. 下列有關牛放射線桿菌(A. actinomycetemcomitans)的敘述,何者正確?(A)可動性革蘭氏陰性桿菌(motile, gram-negative rod)(B)可動性革蘭氏陽性球菌(motile, gram-positive coccus)(C)非動性革蘭氏陽性球菌(non-motile, gram-positive coccus)(D)非動性革蘭氏陰性桿菌(non-motile, gram-negative rod)