In a class of students, some are studying Mathematics, some are studying Science, and some are studying both. If 10 students study Mathematics, 8 students study Science, and 4 students study both, how many students study only Mathematics?

A. 6

In a class, there are three types of students: athletes, artists, and scholars. If John is an athlete, Sarah is an artist, and Mike is a scholar, which of the following statements is true?

C. JOHN AND SARAH ARE BOTH FROM DIFFERENT CATEGORIES

A set of animals includes a dog, a cat, a parrot, and a goldfish. Which of the following animals is not a mammal?

C. PARROT

Four friends, A, B, C, and D, are sitting in a row. A is to the left of B but to the right of C. D is not next to C. What is the correct order from left to right?

A. C, A, B, D

A fruit basket contains an apple, a banana, an orange, and a carrot. Which of the following items is not a fruit?

D. CARROT