A city map is placed on a coordinate grid. The post office is located at the point


P(5, 35) , the library is located at the point L(15, 10), and the fire station is


located at the point F(9, 25) . What is the ratio of the length of PF to the length of


LF ?


A 2 : 3


B 3 : 2


C 2 : 5


D 3 : 5