In the sequence B, D, F, H, what is the next letter?

A. J

In a family of five members A, B, C, D, and E, A is a doctor, B is a teacher, C is a lawyer, D is the mother, and E is the father. Who among them is the teacher?

B. B

In a coding system where Z=26, Y=25, X=24, what is the code for the word 'DOG'?

B. 4-15-7

In the sequence 5, 10, 15, 20, 25, 30, how many times does the number 20 occur?

A. 1

In a family, there are three children: X, Y, and Z. X is the oldest and is a painter. Y is younger than X but older than Z, who is a musician. What is Y's profession?

C. UNKNOWN