Geometry

Question Analysis:
Tests ability to identify incorrect conclusions from parallelogram conditions.
The main focus is on recognizing which properties necessarily follow from the given conditions versus those that require additional evidence.

Key Concept Explanation:
While the given conditions prove PQRS is a parallelogram, rectangle status requires right angles, which aren't mentioned.
Other options reflect true parallelogram properties.

Step-by-Step Solution:
Given conditions prove parallelogram
Check each option:
A. True (opposite sides equal)
B. True (parallelogram property)