$(10)$ A particular transverse wave on a string can be mathematically described by

$(1cm)*sin[(m^{-1})x-(\frac{}{2}{s}^{-1})t],\frac{7}{2}\frac{1}{5}$

Which of the following is true?

A$.$ The wave is traveling towards positive $x$ with speed $2\frac{m}{s}$

B$.$ The wave is traveling towards positive $x$ with speed $0\mathrm{.}5\frac{m}{s}$

C$.$ The wave is traveling towards negative $x$ with speed $2\frac{m}{s}$

D$.$ The wave is traveling towards negative $x$ with speed $0\mathrm{.}5\frac{m}{s}$