The correct option is A 52 is written as LII in Roman numerals.
52 =50 + 1 + 1 = L+ I + I = LII
102 = 100 + 1 + 1 = C + I + I = CII
140 = 100 + 40 = 100 + 50 - 10 = C + XL = CXL
42 = 40 + 1 + 1 = 50 - 10 + 1 + 1 = XL + I + I = XLII
Thus, the option "52 is written as LII in Roman numerals" is the only correct answer.