Read the following article and answer the question by choosing from the options.

I was doing a verbal fill - in - the - blank verb conjugation exercise and forgot what I was doing midsentence and just started reciting random other questions ' answers . My class laughed when I said , " sorry , I forgot where we were " since I 'd forgotten while I was saying it . I have a very bad short and long - term memory too for the most part , and they ' ve gotten worse since Lamictal and Wellbutrin , although they were already getting really bad really quickly when I was 18ish . At the same time though , I can remember some things in perfect detail ( which is part of why I can get away with taking French 2 , 3 , and 4 at the same time ) .

Why did the speaker 's medications lead to an impairment of their long and short term memory ?
Options: A. None of the above choices .; B. The medications are supposed to help , but due to a poor memory , the speaker forgets to regularly take them; C. The medications act on the brain and a result have effects that can lead to memory impairment; D. Both medications are fairly stimulating , leading to a lack of sleep and a worsened memory as a result;...A:
C.