DIRECTIONS: Read the passage(s) given below and answer the questions that follow. Passage-1 (i) Natural numbers having exact two distinct factors i.e., 1 and the number itself are called prime numbers. (ii) Natural numbers having more than two factors are called composite numbers. The units' digit of the product of all prime numbers between 1 and 100 is

• A.  1                                            
• B.  2
• C.  3                            
• D.              0