The Probability That Oklahoma Will Be Struck by a Severe

Multiple Choice

The probability that Oklahoma will be struck by a severe tornado during the year is 60%.The probability that Oklahoma will be struck by a severe blizzard is 30%.The likelihood that Oklahoma will be hit by both is put at 10%.If Oklahoma is struck by a severe blizzard this year, how likely is it that it will also be struck by a severe tornado?

A) .333
B) .667
C) .5
D) .4
E) .18