1. Figure 1 shows an Application registration of a particular application that has three functions (i.e. sign in, signup and forget password). Function Signup required five arguments (email, username, password, name and birthday) while sign in function required two arguments (username and password). Finally, for forget password function, it requires email only. A software tester suggested you need to use boundary value analysis to test the program. Discuss the validity of his selection. Justify your answers.