According to the Executive Order Issued by Rick Perry,under What

According to the executive order issued by Rick Perry,under what authority was the HPV vaccination order issued?

A) "Under the authority vested in the governor by the People of Texas"
B) "Under the authority granted by the Constitution to protect the General Welfare of the people"
C) "By virtue of the governor's power as chief legislator and president of the Senate"
D) "By virtue of the power and authority vested in me by the Constitution and laws of the State of
Texas as the Chief Executive Officer"
E) "Pursuant to the individual liberties guaranteed to the people of Texas by the Bill of Rights"