Answer:
C.
Step-by-step explanation:
An executive order can be defined as orders issued by the President of the United States. This document is signed, published and written decree ordered by the President. There have been numbers of decrees signed by the President since George Washington.
The statement which is incorrect from the given statements is that an executive order can be issues by both the President and state governors. This statement is wrong, as ONLY President can issue, sign, and publish an executive order.
Therefore, option C is correct.