Consider the following table, which gives historical returns on two stocks and the market:

Year	Stock A Price	Stock B Price
2017	100	40
2018	102	42
2019	104	44

Assume that these returns can be used to estimate the expectation, variance, and covariance of future returns.

1.

What are the holding period returns on stocks A&B in 2018?

2. What are the expected returns for stocks A&B ?

3. What is the standard deviation of stock A?