O(x) represents the least odd integer greater than x, whereas o(x) represents the greatest odd integer less than x. Likewise, E(x) represents the least even integer greater than x, whereas e(x) represents the greatest even integer less than x. According to these definitions, the value of O(5.3) + E(–6.7) + o(–3.3) + e(4.7) is:  Choices:
A) - 3  B) - 1  C) 0  D) 1  E) 3

Rationale: "o ( 5.3 ) + e ( – 6.7 ) + o ( – 3.3 ) + e ( 4.7 ) = 7 + ( - 6 ) + ( - 5 ) + 4 = 0 the answer is c ."
Answer: C