GKFix MCQ Question

What is the dimensional formula for Stefan-Boltzmann constant?

• A. [M T⁻³ K⁻⁴]
• B. [M L² T⁻³ K⁻⁴]
• C. [M T⁻² K⁻⁴]
• D. [M L T⁻³ K⁻⁴]