A, B, C, D, and E are five different colors: Red, Blue, Green, Yellow, and Black. If Red is not Blue, Blue is not Green, and Green is not Yellow, which color is not mentioned as being different from any other?
Four friends, A, B, C, and D, are sitting in a row. A is to the left of B but to the right of C. D is not next to A. What is the correct order from left to right?