Question:
Which position did Stanley McMaster hold in Jan, 1972?

Context:
 Stanley McMaster holds the position of Member of the 44th Parliament of the United Kingdom from Mar, 1966 to May, 1970. 
 Stanley McMaster holds the position of Member of the 42nd Parliament of the United Kingdom from Oct, 1959 to Sep, 1964. 
 Stanley McMaster holds the position of Member of the 41st Parliament of the United Kingdom from Mar, 1959 to Sep, 1959. 
 Stanley McMaster holds the position of Member of the 43rd Parliament of the United Kingdom from Oct, 1964 to Mar, 1966. 
 Stanley McMaster holds the position of Member of the 45th Parliament of the United Kingdom from Jun, 1970 to Feb, 1974.

Answer:
Member of the 45th Parliament of the United Kingdom