Sayer Is an Employee of Thorny Foliage Eradication,Inc

Sayer is an employee of Thorny Foliage Eradication,Inc.Sayer tweets messages about Thorny Foliage to employees and outside interested parties,including investors and others.According to the Securities and Exchange Commission,Sayer's messages are subject to

A) federal securities laws.
B) international communications regulations.
C) state blog and tweet rules.
D) no law.