choose the correct option
rama took a petridish and added four pinches of sulphur powder and two pinches of iron filings .Then she divided the mixture in two parts and took them in two china dish A and B . She heated the samples of dish B strongly and then moved the magnets on sample A and B .
a) iron particles cling to the magnet in case of A
b) iron compound in case of B clings to the magnet
c) iron particles cling in both cases A and B
d) iron particles dont cling in both cases A and B