Directions: A floral design is made from tiles each of dimensions 42 cm by 28 cm (as shown in the figure). Find the ratio of the area of the shaded portion to the area of the unshaded portion.

• A.  \[\frac{3}{2}\] 
• B.  \[\frac{3}{11}\]
• C.  \[\frac{9}{11}\]            
• D. \[\frac{7}{13}\]
• E. None of these