C-18-Q094mediummulti_combo_mcq

Which of the following are valid Python identifiers?

9810
$variable
National_ID

aiii only
bi and ii
ci and iii
di, ii, and iii

ব্যাখ্যা

Only National_ID is a legal identifier; it begins with a letter and uses valid characters. 9810 is invalid for starting with a digit and $variable for containing the $ symbol, so the answer is "iii only."

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