Which one of the following interchanges in signs and numbers would make the given equation correct?
20 x 2 - 3 ÷ 4 + 8 = 0	
(a)	+ and -, 2 and 4	
(b)÷ and x, 2 and 8	
(c)	÷ and x, 2 and 4	
(d)	+ and -, 3 and 4
Which one of the following interchanges in signs and numbers would make the given equation correct?
20 x 2 - 3 ÷ 4 + 8 = 0	
(a)	+ and -, 2 and 4	
(b)÷ and x, 2 and 8	
(c)	÷ and x, 2 and 4	
(d)	+ and -, 3 and 4