For g ∈ Z, let g̅ ∈ Z37 denote the residue class of g modulo 37. Consider the group U37 = {g̅ ∈ Z37 ∶ 1 ≤ g ≤ 37 with gcd(g, 37) = 1} with respect to multiplication modulo 37. Then which one of the following is FALSE?

1
The set {g̅ ∈ U37 ∶ g̅ = (g̅)−1} contains exactly 2 elements.
2
The order of the element \(\overline{10}\) in U37 is 36.
3
There is exactly one group homomorphism from U37 to (Z, +).
4
There is exactly one group homomorphism from U37 to (Q, +).

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