Of 15 applicants for a job, 7 had at least 4 years' experience, 9 had degrees, and 1 had less than 4 years' experience and did not have a degree.How many of the applicants had at least 4 years' experience and a degree? Choose the correct choice from the following choices:
A) 14  B) 13  C) 9  D) 7  E) 2
15 - 1= 
<gadget id="calculator">15 - 1</gadget>
<output>14</output>
14   14 - 7 - 9= -2   Then 2 are in the intersection between 4 years experience and degree.   Answer : 2
<result>E</result>
Of 15 applicants for a job, 7 had at least 4 years' experience, 9 had degrees, and 1 had less than 4 years' experience and did not have a degree.How many of the applicants had at least 4 years' experience and a degree?