Q$6.$ If h$1($n$)$ is admissible and h$2($n$)$ is also admissible then, which one of the following answers is

also admissible? $(15$ pts$)$

A$.$ h$1+$ h$2$

B$.$ h$1*$ h$2$

C$.\backslash$alpha $*$ h$1+(1\backslash$alpha $)*$ h$2,$ for $\backslash$alpha in $[0,1]$

D$.$ h$1-$ h$2$