If the product of the integers w, x, y and z is 840, and if 1 < w < x < y < z, what is the value of w + z? Choose the correct choice from the following options:
A) 10
B) 11
C) 16
D) 18
E) 21
840= 4* 5 * 6* 7   So w = 4, x = 5, y = 6, z = 7   w + z = 4+ 7= 
<gadget id="calculator">4+ 7</gadget>
<output>11</output>
11   Answer - 11
<result>B</result>
If the product of the integers w, x, y and z is 840, and if 1 < w < x < y < z, what is the value of w + z?