A tour group split into two groups when waiting in line for food at a fast food counter. The first group bought 6 slices of pizza and 4 soft drinks for $ 28.28. The second group bought 5 slices of pizza and 4 soft drinks for $ 24.50. How much doesone slice of pizzacost?

• A.None of these.
• B.A slice of pizza costs $1.40.
• C.A slice of pizza costs $3.28.
• D.A slice of pizza costs $1.90.
• E.A slice of pizza costs $3.78.