Mustafa has not filed a a tax return for the last $3$ years. Since he had no employment income and his total income is less than $$10,000,$ he believes he didn't need to to flle. He He did receive the following information

slips for the years in question:

$2021-$T$3$ slip that includes a capital gain of $$384$ in box $21$

$2020-$ T$5$ slip with interest of $$170$ in box $13.$

$75008$ slip showing the disposition of shares for proceeds of S$6,400$ and a cost of $$7,000.$

$2019$

For which years is Mustafa required to to file?

O

All

$2021$ and $2020$

C $2021$ and $2019$

O None of them