Pls Answer this Q'n..!

Five tasks are scheduled to be completed in sequence. Each task has a finish-start relationship with the next task. Each has one day of total float. As of today, task one and two have been completed on schedule. How many days of float remain in the schedule of these tasks?

A. 1
B. 2
C. 4
D. 0

My gut says b.2.  Since two activities remain and there is a one day float for each of the remaining two activities.  We are not sure if the first two activities completed on schedule means they used the float or not.