When an investigator wants to test whether a particular parameter is greater than a specific value, he null and alternative hypothesis are best defined as:

A.H0:θ＜θ0 versus Ha:θ＞θ0.

B.H0:θ＞θ0 versus Ha:θ＜θ0.

C.H0:θ＝θ0 versus Ha:θ≠θ0.