SC关于代词指代的问题

lewy

The Confederate general Stonewall Jackson led a feared army that idolized him; they all mourned his ironicdeath from “friendly fire.”
         A       him; they all mourned his
         B       him; they mourned his
         C       him; it mourned his
         D      him; it mourned their
         E       him, it mourned his
这个题选C，答案说his指代Jackson？？？？可是不是说这样是错误的吗，his要指代也只能指代Jackson‘s

AMBER513

The original sentence has a pronoun reference error. The plural “they” is supposed to
refer to “army.” Like many collective nouns, "army” is singular. Furthermore, “all” is
unnecessary.
(A) This choice is incorrect as it repeats the original sentence.
(B) This choice contains a pronoun reference error. The plural “they” is supposed to
refer to “army,” a singular noun.
(C) CORRECT. Here, the singular “it” correctly refers to the singular “army.” This
choice contains no other errors.
(D) This choice contains a pronoun reference error. The plural “their” cannot refer to
Stonewall Jackson, nor to the singular “army.” Also, the “all” is unnecessary.
(E) This choice correctly employs the singular “it” to refer to the singular “army.”
However, this choice is a run-on sentence. A comma is not enough to separate two
independent clauses.
答案这么写的