Which of the proposed reconstructions best captures the argument in the following passage from Paul Davies, “Life and Death on Mars”? If provided with the right equipment, astronauts would have a chance of living on Mars for years. Therefore, a one-way trip to Mars need not mean a quick demise.

A、(1) Astronauts would be provided with the right equipment.(2) Astronauts would have a chance of living on Mars for years.____________________________∴ (3) A one-way trip to Mars need not mean a quick demise. (from 1-2)
B、(1) If provided with the right equipment, astronauts would have a chance of living on Mars for years.(2) Astronauts would be provided with the right equipment.(3) Astronauts would have a chance of living on Mars for years.____________________________∴ (4) A one-way trip to Mars need not mean a quick demise. (from 1-3)
C、(1) If provided with the right equipment, astronauts would have a chance of living on Mars for years.(2) Astronauts would be provided with the right equipment.____________________________∴ (3) Astronauts would have a chance of living on Mars for years. (from 1-2)____________________________∴ (4) A one-way trip to Mars need not mean a quick demise. (from 3)
D、(1) If provided with the right equipment, astronauts would have a chance of living on Mars for years.(2) Astronauts would be provided with the right equipment.____________________________∴ (3) Astronauts would have a chance of living on Mars for years. (from 1-2)(4) If people live on Mars for years, then they do not suffer a quick demise.____________________________∴ (5) A one-way trip to Mars need not mean a quick demise. (from 3-4)