Which two signs are to be interchanged to make the equation below true? \[\text{3 - 9 }\!\!\times\!\!\text{ 27 + 9 - 3 = 15}\]

• A.  \[\text{+}\]and \[-\]                     
• B.  \[\times \] and \[+\]  
• C.  \[\times \]and \[\div \]               
• D.         \[-\]and \[\div \]