A study uses the Benjamini-Hochberg procedure at level $\alpha = 0.05$ for $m=20$ independent tests. If the ordered p-values are $p_{(1)} \le p_{(2)} \le \dots \le p_{(20)}$, the procedure rejects all null hypotheses $H_{(j)}$ for $j=1, \dots, k$, where $k$ is: