The "greater hazard" defense is allowed by OSHA if the employer can show I A variance from the secretary of labor is unavailable or inappropriate II Alternative means of protection are unavailable III The employees refuse adhere to OSHA's restrictions IV The hazards of compliance with the standard are greater than the hazards of noncompliance.

a. I and II.

b. II and III.

c. I, II and III.

d. I, II and IV.