Heart Disease Is an Example of a Multifactorial Illness

Heart disease is an example of a multifactorial illness.Which of the following does NOT support this statement?

A) Both smoking tobacco and having high blood pressure increase the risk for heart disease.
B) First-degree relatives have a six-fold increase in their risk for heart disease.
C) Genetic screening and information may lead an individual to modify his or her environmental risk factors to prevent the disease from developing.
D) Random error in the formation of ovum or sperm causes heart disease.