You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Which is best method to assess fetal damage in a diabetes mother in 1st trimester is: and explain in detail?
In diabetic patients:

Most sensitive test/best test to assess the risk of fetal malformation is maternal HbA1 c levels
The best test to detect fetal malformations is USG.

Now question says - which is the most sensitive screening test to detect congenital malformations. Undoubtedly ultrasound should be the first choice but it is not given in the options.