In the first phase of the Healthy Cities Project Development, World Health Organization (1990), the Working Group set out 53 indicators to help municipalities collect enough data to describe the state of health of their city. Before it set 53 indicators, the health plan working group was aware that cities made use of relatively simple, traditional quantitative indicators on health (such as "mortality"). These indicators do not provide a comprehensive view of the holistic health status of a city, however. Therefore, when it set 53 indicators, qualitative indicators (such as "social support") were also incorporated. Between 1992-1994, 47 cities adopted the 53 indicators. After an interdisciplinary group of experts analyzed the data collected from these cities, the World Health Organization Healthy Cities Project Office revised the 53 indicators as necessary. Thus, among the 53 indicators, the indicators that lack reliability were excluded, and the narrative indicators amended in order to more clearly define the indicators, resulting in the following Healthy Cities WHO32 index. A. Health indicators B. Health services indicators C. Environmental indicators D. Socioeconomic indicators