What bond angle would you eapect for the H$-$C$-$C bond angle in acetylene?

$4-$cme$-C$

between $120$ and $1095$

${109\mathrm{.}5}^{**}$

between $109\mathrm{.}5$ and $99$

$120$

$180$

between $180$ and $120$

$90$