Observer a Is 3

Multiple Choice

Observer A is 3.0 m from a tiny light bulb and observer B is 12.0 m from the same bulb.Assume that the light spreads out uniformly and undergoes no significant reflections or absorption.If observer B sees a light of intensity I,the light intensity that A sees is

A) I.
B) 9I.
C) 16I.
D) 36I.
E) 144I.