Fact 1: All drink mixes are beverages. Fact 2: All beverages are drinkable. Fact 3: Some beverages are red.
If the first three statements are facts, which of the following statements must also be a fact? I. Some drink mixes are red. II. All beverages are drink mixes. III. All red drink mixes are drinkable.
I. I only
II. II only
III. I and III
IV. None of the statements is a known fact.

Question: 以下哪项是正确的？
Options:
A. III 为真, B. II 或 I, C. I 或 II, D. III 或 IV, E. 以上各项均不成立
Answer: A
D
True statement: III