Choice A is the correct answer. Analyze the logic of "and".

1. Condition: A number must be less than 3 AND greater than 5 simultaneously.
2. Logic: No number exists that satisfies both. The sets are disjoint.
3. Result: Empty set (No solution).

?�� Strategic Tip: "And" requires overlap. If the arrows point away from each other with a gap, there is no overlap.

Choice B is incorrect because "Or" allows disjoint sets (this is a valid inequality). Choice C is incorrect because numbers like 4 satisfy this ($3 < x < 5$). Choice D is incorrect because this covers all real numbers (overlapping rays).