HELP Suppose function func$1($n$)$ has a running time of O$($log n$)$ and function func$2($n$)$ has a running time of O$(2$n$).$ What is the running time complexity for running both func$1($n$)$ and func$2($n$),$ using asymptotic notation?

a$.$ O$($log n$)*$ O$(2$n$)$

b$.$ O$($log n$)+$ O$(2$n$)$

c$.$ O$($log n$)$

d$.$ O$(2$n$)$