A rhombus ABCD is inscribed in a rectangle PQRS. If area of rhombus is \[{{\Delta }_{1}}\] & that of rectangle is \[{{\Delta }_{2}},\]then

• A.  \[\frac{{{\Delta }_{1}}}{{{\Delta }_{2}}}=1\]                 
• B.  \[\frac{{{\Delta }_{1}}}{{{\Delta }_{2}}}=\frac{1}{2}\]
• C.         \[\frac{{{\Delta }_{1}}}{{{\Delta }_{2}}}=\frac{2}{1}\]            
• D.  \[\frac{{{\Delta }_{1}}}{{{\Delta }_{2}}}={}^{1}/{}_{3}\]