B: it contains the same shape of string but with large /small circle reversal;
3: the numbers in the outside ring, top and bottom are arrived at by adding,
ie 4 + 2 + 3 = 9 and 7 + 6 + 3 = 16. The numbers in the outside ring left and right are arrived at by multiplying,
ie 4 x 7 x 3 = 84 and 2 x 6 x 3 = 36;
keen as mustard
allegorical, factual
E: the only one where an arrow points to a figure that has an odd number of sides;