A television advertisement claiming that a product is light-years ahead of its time does not make sense because
A) it doesn't specify the number of light-years.
B) it uses "light-years" to talk about time, but a light-year is a unit of distance.
C) a light-year is an astronomically large unit, so a product could not possibly be so advanced.
D) light-years can only be used to talk about light.
Answer: B