The yield of natural gas from Norway's Troll gas field is expected to increase annually until the year 2005 and then to stabilize at six billion cubic feet a day, which will allow such an extraction rate at least for 50 years' production
a) 2005 and then to stabilize at six billion cubic feet a day, which will allow such an extraction rate at least for
b) 2005 and then to stabilize at six billion cubic feet a day, an extraction rate that will allow at least
C) 2005 and then stabilizing at six billion cubic feet a day, with such an extraction rate at the least allowing
d) 2005, then stabilizing at six billion cubic feet a day, allowing such an extraction rate for at least
e) 2005, then stabilizing at six billion cubic feet a day, which will allow such an extraction rate for at least
OA is B.....i'm guessing it is B over A because it is less wordy? Also the parallelism here didn't stick out to me at first, but now i see the "and then" signal connecting the "to increase" and the "to stabilize"
Thanks