Hydrides of group 16

Q. Acidity of diprotic acids in aqueous solutions increases in the order

1. $H_{2}S<H_{2}Se<H_{2}Te$
2. $H_{2}Se<H_{2}S<H_{2}Te$
3. $H_{2}S<H_{2}Se<H_{2}Te$
4. $H_{2}Se<H_{2}Te<H_{2}S$