If 45-[28-{37-(15-*)}]= 57, then * is equal to: Choose the correct choice from the following:
A) - 29
B) - 19
C) 18
D) 29
E) 39

Rationale: "45 - [ 28 - { 37 - ( 15 - * ) } ] = 57 = > 45 - [ 28 - { 37 - 15 + * } ] = 57 45 - [ 28 - 37 + 15 - * ] = 57 = > 45 [ 43 - 37 - * ] = 57 45 - [ 6 - * ] = 57 = > 45 - 6 + * = 57 39 + * = 57 = > * = 57 - 39 = 18 answer : c"
Answer: C