If the sum of $$7$$ whole numbers is even, there must be an even number of odd numbers. The total number of odd numbers could be $$6$$. 
If the sum of $$7$$ whole numbers is even, at mostof the numbers could be odd. 
Options:
(A) $$6$$ 
(B) $$4$$ 
(C) $$3$$ 
(D) $$1$$ 