A student in the laboratory measures thickness of a wire using screw gauge. The readings are \( ...

A student in the laboratory measures thickness of a wire using screw gauge. The readings are \( 1.22 \mathrm{~mm}, 1.23 \mathrm{~mm} \), \( 1.19 \mathrm{~mm}, 1.20 \mathrm{~mm} \). The percentage error in measurement is \( \pm \frac{m}{121} \% \). Find \( m \).
(a) 220
(b) 150
(c) 285
(d) 352
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