What Does It Mean to Be Statistically Significant?

Statistically significant data must have a $p$-value equal to $0.05$.

Statistically significant data must have a $p$-value greater than $0.05$.

Statistically significant data must have a $p$-value less than $0.05$.

Statistically significant data must have a $p$-value less than or equal to $0.05$.