The perimeter of the pentagon below is 10.5 units. Four sides of this pentagon have the same length, h, and the other side has a length of 1.7 units, as shown below. 
 What is the value of h?
A 2.2
B 3.7
C 4.8
D 8.8
                                             
                                          
                                          
                                        
											 
			                  