5. Which of the following contribution of San Agustin or Paoay church to Philippine history? A. The Spanish revolution site B. It was declared as a UNESCO World Heritage site. C. A fusion of styles with arched openings, alternating segmental canopies, and arches of asymmetric shapes. D. The adjacent three-story bell tower was once used by the Katipuneros as an observation post during the Spanish revolution.​