What amount of capital would the company require in the coming year?

The company's WACC is $14\%$.

• Project A: IRR = $18\%$. Since $18\% > 14\%$, Project A should be accepted.
• Project B: IRR = $16\%$. Since $16\% > 14\%$, Project B should be accepted.
• Project C: IRR = $15\%$. Since $15\% > 14\%$, Project C should be accepted.
• Project D: IRR = $11\%$. Since $11\% < 14\%$, Project D should be rejected.

The capital required is the sum of the costs of the accepted projects.

• Cost of Project A = R20 million
• Cost of Project B = R15 million
• Cost of Project C = R21 million

Total capital required = Cost of Project A + Cost of Project B + Cost of Project C

$$\text{Total capital required} = \text{R}20 \text{ million} + \text{R}15 \text{ million} + \text{R}21 \text{ million}$$ $$\text{Total capital required} = \text{R}56 \text{ million}$$

The amount of capital the company would require in the coming year is R56 million.

The final answer is $\text{c. R56 million}$.