A mathematics teacher tabulated the marks secured by 35 students of 8th class. The average of their marks was 72. If the marks secured by Reema was written as 46 instead of 56 then find the correct average marks up to two decimal places.  Choose the correct choice from the following options:
A) 73.41  B) 72.28  C) 72.43  D) 73.43  E) can not be determined

Rationale: "total marks = 35 x 72 = 2520 corrected total marks = 2520 - 46 + 56 = 2530 correct average = 2530 / 35 = 72.28 answer : b"
Answer: B