The monthly unit sales U (in thousands) of lawn mowers are approximated by at U = 72.50 - 44.75 cos 6 where t is the time (in months), with t = 1 corresponding to January. Determine the months in which unit sales exceed 100,000. (Select all that apply.) January 0 February O March O April O May June O July O August September 0 October O November O December