Question: A 43-year-old gravida 3 para 3 woman presents for her first prenatal visit at 9 weeks gestation. She is highly concerned about her risk of having a baby with Down syndrome due to her age and is insistent on testing the fetus as soon as possible. What is the time frame of the earliest invasive test available? Need Assignment Help service? A. 4-5 weeks gestation B. 10-13 weeks gestation C. After 15 weeks gestation D. After 20 weeks gestation