If 45-[28-{37-(15-*)}]= 56, then * is equal to:	Pick one:
A) -29  B) -19  C) 17  D) 29  E) 39
45-[28-{37-(15-*)}]= 56 =&gt; 45-[28-{37-15+*}]=56   45-[28-37+15-*]=56 =&gt; 45[43-37-*]=56   45-[6-*]=56 =&gt; 45-6+*=56   39+*=56 =&gt; *=56-39= 
<gadget id="calculator">56-39</gadget>
<output>17</output>
17   ANSWER:17
<result>C</result>
If 45-[28-{37-(15-*)}]= 56, then * is equal to: