Test and analysis: the state-owned economy is the means of production owned by all workers in society. The collective economy means that some workers share the means of production. Mixed ownership economy is a form of ownership in which different ownership economies jointly produce or operate according to certain principles. The private economy is based on the private ownership of means of production and wage labor, with the purpose of making profits. In the title, "State-owned funds account for 40% and 55%, and other funds account for 59% and 45%." It shows that Guyuelongshan Company belongs to mixed ownership economy. Therefore, the ABD item is wrong. Choose item c in this question.
Comments: This question is a judgmental multiple-choice question. To judge multiple-choice questions, we must first carefully examine the stem and accurately grasp the information provided by the stem; Secondly, it is the key to do this kind of topic well to comprehensively investigate the topic limb, understand the specific meaning of the topic limb and grasp the subtle differences between the concepts of the topic limb; Finally, the choice of options is checked and decided by combining the branch and trunk of the topic.