How would you add a single space when concatenating the two variables a="firstname" and b= "lastname" ? print(a+b) print(a+++b) print(a b) print(a,1,b) The order of statements is important for a program to function as expected. sequential chronological ascending logical When designing an algorithm, the next step after determining the inputs is what? Determining the outputs Developing a model Determining the types of decisions Ordering the steps