The human male ejaculates about `ul((A))` million sperms during a coitus of which for normal fertility at least `ul((B))` percent sperms must have normal shape and size and at least `ul((C))` percent of them must show vigorous motility.

Answer

To solve the question regarding human male ejaculation and sperm characteristics necessary for normal fertility, we can break it down into three parts: A, B, and C.

### Step-by-Step Solution:

1. **Identify the Total Sperm Count (A):**
- The human male ejaculates approximately **39 to 928 million** sperms during a single coitus.
- For the purpose of this question, we can take the average or the lower limit, which is **39 million**.

**Answer for A:** 39 million

2. **Determine the Percentage of Normal Shape and Size Sperm (B):**
- For normal fertility, at least **50%** of the sperm must have a normal shape and size.
- This means that if a male has less than 50% of sperm that are normally shaped, it can reduce his fertility chances.

**Answer for B:** 50%

3. **Identify the Percentage of Vigorous Motility Sperm (C):**
- It is required that at least **50%** of the sperm show vigorous motility.
- This is crucial because motile sperm are necessary to travel and fertilize the egg.

**Answer for C:** 50%

### Final Answers:
- A: 39 million
- B: 50%
- C: 50%