Correct option is C
Given:
Replace the given letters with their respective arithmetic operations:

Following the BODMAS rule (Bracket, Orders (i.e. powers and square roots, etc.), Division and Multiplication, Addition and Subtraction):
Option (C) 21 B 11 D 33 A 11 C 5
= 21 × 11 - 33 ÷ 11 + 5
Division (÷): 21 × 11 - 3 + 5
Multiplication (×): 231 - 3 + 5
Addition (+): 236 - 3
Subtraction (-): 233
Final Answer: (c) 233