When Can the Governor and the Legislative Budget Board Exercise

When can the governor and the Legislative Budget Board exercise their budget execution authority?

A) after a bill has been passed in the Texas House but before it has been passed in the Texas Senate
B) after the comptroller's certification that there is unallocated money remaining in the state treasury
C) during an emergency when the legislature has adjourned
D) when there is an economic recession
E) before a bill has been introduced into the legislature