Studies Regarding Rat Learning and Brain Structure by Greenough (1990)and

Studies regarding rat learning and brain structure by Greenough (1990) and Wallace et al.(1992) suggest that

A) early experiences such as learning cause physical changes in the brain.
B) psychopathology is the result of early learning experiences.
C) while psychopathology is often a result of early life experiences, it is generally due to the physical changes in the brain that such experiences cause.
D) genetically caused brain structure problems can be corrected by positive life experiences.