OG SC 137请教

137. Joachim Raff and Giacomo Meyerbeer are examples
of the kind of composer who receives popular acclaim
while living, often goes into decline after death, and
never regains popularity again.
(A) often goes into decline after death, and never
regains popularity again
(B) whose reputation declines after death and never
regains its status again
(C) but whose reputation declines after death and
never regains its former status
(D) who declines in reputation after death and who
never regained popularity again
(E) then has declined in reputation after death and
never regained popularity
Verb tense; Parallelism
Faulty parallelism in the relative clause who
receives … goes … regains … makes it unclear who
or what is being described. Th e original clause
begins by describing a certain kind of composer.
As written, with who as the subject of goes and
regains, the last two descriptions illogically
continue to refer to the kind of composer.
Logically it must be the reputation that declines
after the composer’s death.
A Illogically suggests the composer goes into
decline after death; redundant again.
B Th e two clauses are not parallel, lack a
coordinating conjunction, and do not
describe the same thing; redundant again.
C Correct. Th is sentence presents the proper
logic while maintaining parallel structure
and consistent verb tense.
D Th e verb tenses are inconsistent with
present tense used in the first phrase;
redundant again.
E Th e verb tenses are inconsistent with present
tense used in the first phrase; to maintain
parallelism, the verbs must be receives …
declines … regains.
Th e correct answer is C.

B的解释说lack a coordinating conjunction, 是为什么呢？whose 不是从句吗？and 也是连接词，为什么还缺连词呢？
还说do not describe the same thing...可是我感觉BC之间的差别就是but和后面的again，为什么C就平行，B就不平行了呢？为什么C就描述的同一个事情，B就不是呢？谢谢！