Many cities around the United States are installing LED streetlights, in part to combat crime by improving visibility after dusk. An urban police department claims that the proportion of crimes committed after dusk will fall below the current level of 0.73 if LED streetlights are installed. Specify the null and alternative hypotheses to test the police department's claim.

Group of answer choices

a) H0: p = 0.73 and HA: p 0.73

b) H0: p < 0.73 and HA: p 0.73

c) H0: p 0.73 and HA: p < 0.73

d) H0: p 0.73 and HA: p > 0.73