In the context of structural models of intelligence, which of the following statements is most appropriate and true regarding the developmental structure of the three-dimensional classification of Operations, Contents, and Products and their total factors (initially 120, subsequently 150 and 180) under the 'Structure of Intellect (SOI) Model' proposed by J.P. Guilford, and the seven independent factors (such as verbal comprehension, word fluency, numerical ability, etc.) provided under the 'Primary Mental Abilities' theory proposed by Louis Thurstone?

J.P. Guilford presented the three-dimensional Structure of Intellect (SOI) Model, in which intelligence is classified into three dimensions—Operations (5 types), Contents (5 or 4 types), and Products (6 types) (initially 5 × 5 × 6 = 120 factors, later increased to 150 and 180). On the other hand, Louis Thurstone proposed the 'Group Factor Theory' or 'Primary Mental Abilities' theory, in which he rejected Spearman's single 'g' factor and stated 7 primary mental abilities (such as verbal comprehension, space factor, numerical ability, word fluency, etc.) as the basis of intelligence. Therefore, option (A) provides the most accurate description of the scientific and contextual nature of these two theories.