Study the following diagram carefully and choose the correct answer for the following questions
1. Which of the following statement is true ?
A. No patient is a professor
B. All professors are doctors
C. All doctors are singers
D. Some patients who are signers are also doctors as well as progesors
2. Which of the following statement is not true ?
A. Some doctors are not singers
B. All patients are singers
C. Patients who are doctors are signers
D. All doctors are singers
