I NEED THIS ASAP PLEASE
 A chess board is made using the ratio of square length to king's height, 2.5 inches to 4.5 inches. If a chess board is made with a king's height of 2.25 inches, what is the length of the square? 
 A: 0.75 inch 
 B: 1.25 inches 
 C: 2.25 inches 
 D: 4.75 inches