What will come in place of the question mark (?) in the following equation, if ‘+’ and ‘–’ are interchanged, and ‘×’ and ‘÷’ are interchanged?

11 ÷ 12 – 78 × 6 + 54 = ?

11 ÷ 12 – 78 × 6 + 54 = ?

? = 11 × 12 + 13 – 54 = ?

? = 132 + 13 – 54 = ?

? = 145 – 54 = ?

? = 91

The final answer is 91.

Thus, the correct option is: (b)​​