Because of the Travel Time of Light,we See More Distant

Multiple Choice

Because of the travel time of light,we see more distant parts of the universe as they were when the universe was younger,but we cannot see back "into" times when the universe was opaque and light could not travel freely.Using photons,then,what is the furthest back in time that we can see as we look out into the universe?

A) 1/1,000,000 seconds after the start of the Big Bang
B) 500,000 years after the start of the Big Bang
C) 3 minutes after the start of the Big Bang
D) 3000 years after the start of the Big Bang