Raisins were dropped into a clear carbonated soft drink after a few seconds some raisins started bubbling up and down. Which of the following statements is an observation
A. The raisins rose due to the bubbles formed in the soft drink
B.The raisins were surrounded by bubbles
C. the rising way since had a lower density than the soft drinks
D. the bubbles around the raisins were formed by the reaction of sugar with the soft drink ​