Not only milk but also dairy products, divalent cation-containing supplements, and antacids may decrease the absorption of Tetracyclines up to 50% or even 90%. This is due to the chelation properties of tetracyclines that gives high affinity to these polyvalent cations making the resulting complex insoluble and not absorbable. Usually, it is indicated to take tetracyclines at least 3 hours before and 3 hours after consuming such products. Quinolone antibacterials are susceptible to this mechanism too.
The correct answer is A.
References:
https://pubmed.ncbi.nlm.nih.gov/946598/#:~:text=Milk%20and%20other%20dairy%20products,to%2090%25%20or%20even%20more.
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