The Mean Annual Per Capita Cost Is Lower in Community

Multiple Choice

The mean annual per capita cost is lower in community water fluoridation systems for larger populations than it is for smaller populations. The optimal level for water fluoridation is 7.0 ml F per liter of water regardless of climatic conditions.

A) Both statements are true.
B) Both statements are false.
C) The first statement is true; the second statement is false.
D) The first statement is false; the second statement is true.