You are using Holt's exponential smoothing method with smoothing constants 0.1 (for level) and 0.3 (for trend) to forecast weekly revenues from cosmetic products at a local drug store. Just prior to week 1, the level is estimated to be $3,670, and the trend is estimated to be $75. Then during week 1, actual revenue is $3,780. After observing this value, which of the following are closest to the forecasts for the next three weeks?

a. Week 2: $3,906; week 3: $3,975; week 4: $4,045

b. Week 2: $3,861; week 3: $3,945; week 4: $4,030

c. Week 2: $3,824; week 3: $3,901; week 4: $3,977

d. Week 2: $3,874; week 3: $3,971; week 4: $4,068