Which of the following statements hold true for writing as well as reading of the roman numbers?

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Your question was -Which of the following statements hold true for writing as well as reading of the roman numbers?

i. You should always work from right to left in order to find the correct value of a roman number
ii. While moving from right to left, we add the values of the symbols when a lower value symbol is followed by a higher value symbol
iii. While moving from right to left, we subtract the lower value from the higher value, when a higher value symbol is followed by a lower value symbol
iv. There is no symbol to symbolize zero using the roman numbers
e. i and ii are true
f. ii and iii are true
g. I, ii and iii are true
h. None of the statements is true
i. All the statements are true

Correct answer: e

e. i and ii are true