Which one of the following sets of monosaccharides forms sucrose?

Options

1. A$\alpha$-D-galactopyranose and $\alpha$-D-glucopyranose
2. B$\alpha$-D-glucopyranose and $\beta$-D-fructofuranose
3. C$\beta$-D-glucopyranose and $\alpha$-D-fructofuranose
4. D$\alpha$-D-glucopyranose and $\beta$-D-fructopyranose