1. Ms. Nur Farhanah inherited some of her parent's fortune. She plans to invest some funds to generate income. There are three investment options and all information as stated below:

Saranya Jewels Berhad		Mogana Sapphire Corporation		Red Haliza Ltd
Probability	Rate of Return	Probability	Rate of Return	Probability	Rate of Return
0.50	9.00%	0.10	-5.00%	0.10	1.00%
0.30	10.00%	0.60	45.00%	0.50	25.00%
0.20	15.00%	0.30	25.00%	0.40	32.00%

Based on the given information, you are required to calculate the following for each stock:

1. Expected rate of return (Ṝ).
2. Variance
3. Standard Deviation of expected returns (σ).
4. Coefficient of variation (CV).
5. Determine the best investment for Ms. Nur Farhanah.