Final answer:
The total cost of the hard disk in Malaysian Ringgit (MYR) is 200 MYR.
Step-by-step explanation:
To calculate the total cost of the hard disk in Malaysian Ringgit (MYR), we need to know the exchange rate between the US Dollar and MYR.
Let's assume the exchange rate is 1 USD = 4 MYR.
Therefore, the total cost of the hard disk in MYR would be $50 x 4 MYR/USD = 200 MYR.
So, the correct answer is option 3) 200 MYR.