The correct answer for this question is option 3, which is 15 A.
To determine the value of current I in the circuit, we need to analyze the circuit diagram given. Unfortunately, the circuit diagram is not provided in the question. Therefore, we cannot accurately determine the value of current I without further information.
It is important to note that the answer provided in the question may not be correct if the circuit diagram is not shown. Without the circuit diagram, it is impossible to determine the value of current I accurately. Therefore, it is advisable to request the circuit diagram or seek further clarification on the question before making any assumptions about the answer.