Final answer:
The question asks for the oas (treasury) for Microsoft Corporation on a specific date using a price history report. However, the question does not provide enough information to calculate the oas (treasury).
Step-by-step explanation:
The representation 'oas (treasury)' refers to the 'option adjusted spread' for a corporate bond or security. In this case, the question is asking for the option adjusted spread for the Microsoft Corporation on a specific date, 4.2. However, the question mentions a 'price history report', which implies that the oas (treasury) might not be directly available in the report.
The option adjusted spread is a measure of the yield spread over the risk-free rate, which compensates for embedded options (such as call or put options) in a bond or security. To calculate the oas (treasury), you would need specific bond and option information, along with a pricing model.
Without access to the actual price history report and related data, it is not possible to provide the oas (treasury) for the Microsoft Corporation on 4.2. However, if you have the necessary data, you can use a pricing model and perform the calculations to determine the oas (treasury).