Using a Technique Known as Very Long Baseline Interferometry (VLBI)

Multiple Choice

Using a technique known as very long baseline interferometry (VLBI) , in which the signals received by two radio telescopes located on different continents are combined as if they were a single radio telescope, astronomers can resolve two objects separated by only 0.00001 second of arc. What is the smallest detail we can see in a quasar 15 billion light-years away using this kind of interferometer?

A) 0.7 ly
B) 44 ly
C) 2400 ly
D) 150,000 ly