Of 120 applicants for a job, 56 had at least 4 years' experience, 72 had degrees, and 12 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 options
A) 10 B) 15 C) 22 D) 20 E) 24
120 - 12= 
<gadget id="calculator">120 - 12</gadget>
<output>108</output>
108   108 - 56 - 72= -20   Then 20 are in the intersection between 4 years experience and degree.   Answer : 20
<result>D</result>
Of 120 applicants for a job, 56 had at least 4 years' experience, 72 had degrees, and 12 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?