We know an integer Q is odd, negative and is a product of ten different integers; we need to check that which of the given options are true.

Product of 10 integers can be odd only if all the integers are odd and for the product to be negative, odd number of integers i.e. 1 or 3 or 5 or 7 or 9 of the 10 integers need to be negative. (Note: - even if one number is even in the product of integers, the result of the product must be even)

Hence out of the given choices only (B) i.e. each of the integers in the product is odd must be true.