According to a study in a previous year, 52.0% of households nationwide used natural gas for heating during a year. Recently, a survey of 1,800 randomly selected households showed that 53.0% used natural gas for heating. What is the most appropriate statistical inference regarding this situation?
A)The percentage of households using natural gas for heating has decreased over time.
B)The survey results are unreliable due to the small sample size.
C)There is no significant difference in the percentage of households using natural gas for heating between the previous study and the recent survey.
D)The percentage of households using natural gas for heating has increased over time.