Which of the Following Statements Is/are False

Multiple Choice

Which of the following statements is/are false?
1) Fault tree analysis method is used to determine reliability of product
2) The goal of Six Sigma is to reduce number of defects to 2.4 parts per billion
3) Six sigma is represented by normal distribution curve
4) Poka yoke is a policy which prevents occurrence of human errors

A) only statement 3
B) statement 2 and statement 3
C) only statement 2
D) statement 1, 3 and 4