How should vitamin B6 be transported in order to protect its photosensitive nature?
a. Vitamin B6 should be transported in opaque containers to protect it from light exposure.
b. Vitamin B6 should be transported in temperature-controlled shipping to prevent degradation.
c. Vitamin B6 should be transported in airtight packaging to prevent oxidation.
d. Vitamin B6 should be transported in shock-resistant packaging to prevent damage during transit.