(WHILE LOOP)

BB-Question.For which of the following cases is it preferable to use to use a do-while loop instead a while loop ?a) when there is a IF statement embedded at the top of a FOR-loopb) when there is a duplicated block of code in front and at the top of WHILE loopc) when a WHILE loop is nested inside another WHILE loopd) when there is a duplicate IF statement before and after the WHILE loope) when the WHILE loop is enclosed by an IF statement