If We Visualize the Time That Has Passed Since the Origin

Multiple Choice

If we visualize the time that has passed since the origin of our solar system and Earth,or about 4.6 billion years,as a one-hour clock,then out of one hour,humans have been present on the planet for about

A) 30 minutes.
B) 15 minutes.
C) 1 minute.
D) 20 seconds.
E) 2/10ths of a second.