Gate 2017 pyq CAO | Consider the C struct defines below:

Consider the C struct defines below: struct data { int marks [100] ; char grade; int cnumber; }; struct data student; The base address of student is available in register R1. The field student.grade can be accessed efficiently using (A) Post-increment addressing mode. (R1)+ (B) Pre-decrement addressing mode, -(R1) (C) Register direct addressing mode, R1 (D) Index addressing mode, X(R1), where X is an offset represented in 2’s complement 16-bit representation.