The correct option is A XXVIII
Step 1: Write the Roman numerals as Hindu Arabic Numerals.
XII = 10 + 2 = 12
XVI = 10 + 6 = 16
Step 2: Add the numbers.
XII + XVI = 12 + 16
= 28
Step 3: Write the sum in Roman numerals.
28 = 20 + 8
= XX + VIII
= XXVIII
Hence, XII + XVI = XXVIII