API 936 specifies that:
"The owner shall provide acceptance criteria for hammer testing, visible cracking, and surface voids."
- API Std 936, Section 8.3.1
This ensures that acceptance standards align with the owner's operational and design tolerances. Option A is correct.

According to API 936, thecontractoris responsible for submitting adetailed dryout procedure. This procedure must be reviewed and approved by the owner or the owner's representative. While manufacturers may provide guidance, the contractor is accountable for ensuring the procedure aligns with project specifications, material requirements, and environmental conditions.
Reference:
API Std 936, Section 6.5.1 - "The contractor shall submit a proposed dryout procedure... for review and approval."

According to TR 980, direct open flame torches are not recommended for dryout because of their uneven heating and local overheating risk:
"Initial heating may be performed using portable burners, electrical heating elements, or process heating devices. Use of open torches is not recommended due to potential for localized overheating and damage."
- API TR 980, Section 5.3.3
Therefore:
A (electrical heating elements): Acceptable
B (open torches): Not acceptable
C (portable burners): Acceptable
D (process heating devices): Acceptable