Which of the following statements are correct about half-period?

The correct statements  about half life-period is

$\begin{array}{l}\frac{1}{[A{]}_t}=\frac{1}{[A{]}_0}+kt\\ \frac{4}{a}=\frac{1}{a}+k\times t\Rightarrow t_{3/4}=3\left(\frac{1}{ka}\right)=3\times t_{1/2}\end{array}$

It is proportional to initial concentration for zeroth order

Average life = 1.44 x half-life for first order reaction

Time of 75% completion of reaction is thrice of half-life (initial half-life) period in second order reaction

99.9% reaction takes place in 10 minutes for the case when rate constant is $0.693{\min }^{-1}$