Final answer:
The spring-type and lever-type mentioned in the question refer to two kinds of tubing benders, which are tools designed to bend pipes and tubes effectively using leverage. So the correct answer is Option C.
Step-by-step explanation:
The spring-type and lever-type are two kinds of tubing benders. Tubing benders are tools used to bend tubes and pipes without causing crimps or collapsing the tubing. Similar to levers such as a wheelbarrow or a shovel, which use an input force, output force, and a force on the pivot (Fo) to achieve mechanical advantage (MA), these benders utilize the principles of leverage to bend tubing with precision. However, the question does not provide complete formulas for MA, so we can't calculate it here. Nevertheless, we can infer that both the spring-type and lever-type benders are designed to maintain the integrity of the tubing while executing a bend.