Nearly two tons of nuclear-reactor fuel have already been put into orbit around the Earth, and the chances of a collision involving such material increase greatly as the amount of both space debris and satellites continue to rise.
(A) as the amount of both space debris and satellites continue to rise
(B) as the rise continues in both the amount of satellites and space debris
(C) as the amount of space debris and the number of satellites continue to rise
(D) with the continually increasing
...
(A) as the amount of both space debris and satellites continue to rise
(B) as the rise continues in both the amount of satellites and space debris
(C) as the amount of space debris and the number of satellites continue to rise
(D) with the continually increasing
...






