Given below figures 1 and 2 show an equilateral triangle which is divided into thirds and quarters respectively. They are combined in figure - 3. The Fraction of shaded part in the figure -3 is

• A.  \[\frac{5}{12}\]          
• B. \[\frac{5}{24}\]
• C.  \[\frac{7}{12}\]          
• D. \[\frac{11}{24}\]