Final answer:
The disadvantage of using automatic graphing software is both garbage in, garbage out, and variances from specific graphing styles such as ABA-approved ones.
Step-by-step explanation:
One disadvantage of using automatic graphing software is C. both A and B. Option A, garbage in, garbage out, highlights one of the crucial limitations of any computational tool, including graphing software. If the input data is faulty or inaccurate, the output—regardless of how sophisticated the software is—will also be inaccurate. Therefore, the accuracy of graphs generated by software heavily relies on the quality of the input data.
Option B refers to variances from ABA-approved graphing style. Automatic graphing software may not always adhere to specific standards or styles that are expected in certain fields, like those approved by the American Bar Association (ABA) for legal purposes. This can lead to graphs that are not suitable for professional presentations or that fail to meet required guidelines for submission in formal contexts.