A. It is not important to abstain from having sex during treatment since both partners are already infected.
B.
It is important to abstain from having sex during treatment to prevent reinfections.
C.
It is important to abstain from sex during treatment even though it's not possible to reinfect the same person.
D.
It is not important to abstain from having sex because both partners are receiving the same type of treatment.

B. It is important to abstain from having sex during treatment to prevent reinfections.

Explanation:

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exposure to hazardous carcinogens and toxic substances can cause breathing problems, such as copd and various types of cancer. it also increases the risk of heart attacks and strokes and has serious (but no less unattractive) side effects, such as aging, yellow teeth, a terrible smell and damage to the vocal cords.

answercobra of 1985;