Sentence Correction

Compared to high school students, who readily understand the numerous theorems of Geometry, most of the theorems of Number Theory are sophisticated, with those with advanced degrees in mathematics only understanding them.

A. Compared to high school students, who readily understand the numerous theorems of Geometry, most of the theorems of Number Theory are sophisticated, with those with advanced degrees in mathematics only understanding them.
B. In contrast to the numerous theorems of Geometry readily accessible to high school students, most of the theorems of Number Theory are so sophisticated that only those with advanced degrees in mathematics can understand them.
C. Compared with the numerous theorems of Geometry, which are readily accessible to high school students, Number Theory has theorems so sophisticated that only those with advanced degrees in mathematics can understand them.
D. Compared to Geometry, numerous theorems of which are readily accessible to high school students, Number Theory has theorems so sophisticated as those with advanced degrees in mathematics only understanding them.
E. Compared to Geometry, which has numerous theorems that are readily accessible to high school students, Number Theory, which has many theorems that are so sophisticated that only those with advanced degrees in mathematics can understand them.

Source: Magoosh

OA: B

In choice C & D, is meaning of 'Number Theory has theorems' correct? I understand it as 'Number Theory owns/posses theorems' which it is wrong from my view. Am I right?

Any help would be appreciated

Mo2men wrote:In choice C & D, is meaning of 'Number Theory has theorems' correct? I understand it as 'Number Theory owns/posses theorems' which it is wrong from my view. Am I right?

It is not incorrect to ascribe has/have/had to an inanimate noun.
SC33 in the OG for Verbal 2016:
Conestoga wagons had high wheels.
C and D in the SC above:
Number Theory has theorems.
Given the OA to SC33, this usage has seems acceptable.