Sentence Correction

Although Mona monkeys have been protected by ordinances that ban the hunting of species native to the island for almost 50 years, its shank is still considered a delicacy by those living in Grenada.

its shank is still considered a delicacy
their shank is still considered as being a delicacy
its shanks are still considered delicacies
its shank is still considered to be a delicacy
their shanks are still considered a delicacy

OA:E.

In E, isn't there a wrong comparison issue when a delicacy referts to their shanks ?

No... Shanks is referring to the Monkeys, not delicacy.

That was not what I asked.
My problem was with the line.
X is considered Y.(their shanks are still considered a delicacy )
Shouldnt X and Y agree in number ?