If refractive indices of glass and water are respectively \[{}^{3}/{}_{2}\] and \[{}^{4}/{}_{3}\], then the refractive index of glass with respective to water is

• A.  2                                            
• B.  \[{}^{8}/{}_{9}\]
• C.  \[{}^{9}/{}_{8}\]             
• D.  \[{}^{1}/{}_{2}\]