Dringenberg Et Al

Dringenberg et al.'s experiment used pregnant guinea pigs to establish a causal relationship between fetal alcohol exposure and later neurological and behavioural deficits.The independent and dependent variables in that experiment were,respectively:

A) the treatment levels of liquids given to the pregnant guinea pigs and the time it took the offspring to escape from the water maze.
B) whether the pregnant guinea pigs were given alcohol,water,or sugar water and whether the offspring escaped from the water maze or not.
C) the size of each offspring's hippocampus and whether its mother received alcohol,water,or sugar water during pregnancy.
D) the amount of fetal brain growth and the time it took the guinea pigs to escape from the water maze.