In the code, A × B means A is the mother of B, A ÷ B means A is the daughter of B, and A - B means A is the son of B. If D ÷ C - A = true, what is the relationship of D to A?

A. D IS A'S MOTHER

If A + B means A is the uncle of B, A - B means A is the aunt of B, and A × B means A is the cousin of B. What is the relationship of C if A + C - B = true?

B. C IS THE AUNT OF B

In a coded relationship, A × B means A is the sister of B, A + B means A is the father of B, and A - B means A is the mother of B. If C - A + B = true, what is the relationship of C to B?

A. C IS THE MOTHER OF B

There are four animals: a dog, a cat, a rabbit, and a parrot. The dog is not a mammal, the cat is a mammal, the rabbit is a mammal, and the parrot is a bird. Which of the following statements is true?

B. ONLY THE CAT AND RABBIT ARE MAMMALS

In the sequence 10, 20, 30, 40, 50, how many multiples of 15 are present?

A. 1