The Mean Annual Per Capita Cost Is Lower in Community

The mean annual per capita cost is lower in community water fluoridation systems for larger populations (>50,000) than it is for smaller populations (<10,000) .The lifetime cost of fluoridation per person is less than the cost of one dental filling.

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.