求教 885-A-10 (da quan 519)

10.   Most primates are immune to feline rhinovirus, but a specific group, this being the golden macaques, are highly susceptible to the organism.

(A) a specific group, this being the golden macaques, are highly susceptible to

(B) a specific group, the golden macaques, is highly susceptible to

(C) one group, specifically golden macaques, is highly susceptible of

(D) a specific group, the golden macaques, which are highly susceptible to（B）

(E) a specific group, the golden macaques, which are highly susceptible of

请指点一下苯徒儿: 从意思上, 它们有什么不同?
1. "a specific group" vs. "one group"
2. "susceptible to" vs. "susceptible of"