D is wrong. Lines that go through the origin are lines in the form of y = ax. If something does not go through the origin, it is of the form y = ax + b
B and C are a bit ambiguous. What exactly is meant? Do they mean that both of them intersect the x axis (or the y axis) in 2 different places? Then both are true. If they mean at the same place then both are false.
Answer: The average person doesn't live 1 million hours. 1 million hour is 114 year. That is much more than 78 years. 1 million ours is too much. You would need 683280 to make it 78 years.
