Which of the Following Occur During the Act of Vomiting

Which of the following occur during the act of vomiting? $\begin{array}{llll}&Lower ~Esophageal& Upper~ Esophageal& Abdominal &Diaphragm\\&Sphincter&Sphincter& Muscles\\\hlineA.&\text {Contract } & \text { Contract } & \text { Contract } & \text { Contract } \\B.&\text {Contract } & \text { Contract } & \text { Relax } & \text { Relax } \\C.&\text {Relax } & \text { Contract } & \text { Contract } & \text { Relax } \\D.&\text { Relax } & \text { Relax } & \text { Contract } & \text { Contract } \\E.&\text { Relax } & \text { Relax } & \text { Relax } & \text { Relax }\end{array}$