Stefan swam laps of his pool each day last week.

The number of laps he swam each day followed a geometric sequence.

He swam 1 lap on Monday, 2 laps on Tuesday and 4 laps on Wednesday.

The number of laps that he swam on Thursday was

**A.** `5`

**B.** `6`

**C.** `8`

**D.** `12`

**E.** `16`