Given below are four jumbled sentences. Select the option that gives their correct order.
A. Since then cows, pigs, dogs and other mammals have been cloned.
B. They were created with the identical technique used to clone Dolly, the sheep, back in 1996.
C. Two monkeys have been cloned in a Chinese laboratory.
D. Zhong Zhong and Hua Hua were born a few weeks ago at a Chinese lab.