For muscle-building anabolic steroids we can say that:

Options

A. a)they are relatively risk free to use
B. b)they have side effects that outweigh their benefits
C. c)they increase muscular strength and endurance
D. d)both (b) and (c)

Explanation

**Step-by-Step Solution:**

1. **Understanding Anabolic Steroids**: Anabolic steroids are synthetic variations of the male sex hormone testosterone. They are designed to promote muscle growth and enhance physical performance.

2. **Medical Uses**: Anabolic steroids are used medically to treat hormone imbalances and conditions that cause muscle loss, such as cancer or AIDS. This indicates that they have legitimate therapeutic applications.

3. **Effects on Athletes**: Athletes may be tempted to use anabolic steroids because they can enhance performance and improve physical appearance by increasing muscle mass and strength.

4. **Side Effects**: Despite their benefits, anabolic steroids come with significant risks. Long-term or unsupervised use can lead to serious side effects, including:
- Negative mental effects such as delusion and increased aggression.
- Physical side effects like severe acne and edema (swelling due to water retention).

5. **Evaluating the Options**:
- Option A states that anabolic steroids are relatively risk-free to use, which is incorrect given the known side effects.
- Option B claims that they have side effects that outweigh their benefits, which is true.
- Option C states that they increase muscular strength and endurance, which is also true.
- Therefore, the correct answer is both B and C.

**Final Answer**: Both B and C are correct: anabolic steroids have side effects that outweigh their benefits, and they increase muscular strength and endurance.

---