The C-O-H bond angle in methyl alcohol is ${\mathrm{\theta }}_1$ and the bond angle of C-O-C in dimethyl ether is ${\mathrm{\theta }}_2$. The correct relation is

Both ${\mathrm{\theta }}_1 \mathrm{and} {\mathrm{\theta }}_2$ are lesser than 109º28'

${\mathrm{\theta }}_1$ is lesser than 109º28' but ${\mathrm{\theta }}_2$ is greater than 109º28'

${\mathrm{\theta }}_1$ is greater than 109º28' but ${\mathrm{\theta }}_2$ is lesser than 109º28'

Both ${\mathrm{\theta }}_1 \mathrm{and} {\mathrm{\theta }}_2$ are greater than 109º28'