Math Chapter Wise Topology English MCQ OPSC PGT 2017 Q.Helne-Borel property ensures that: AAn open cover of a compact set has a finite sub-cover BAn open subset of a compact set has a bounded sub-cover CUniformly continuous function is differentiable. DUniformly continuous is Riemann integrable Show answer Correct answer: An open cover of a compact set has a finite sub-cover