Question 1 Assume that transaction f14a is a valid transaction and in that transaction, A has been given 25 bitcoins. Given the following pool of unconfirmed transactions: f3cd 3ba5 78a8 Inputs: af52(2) Outputs: C(3), D(2), B(1),A(10.5) Inputs: e4a4(2) Outputs: E(0.5) Inputs: bd7d(2) Outputs: A(0.5), E(0.5). F(0.5), D(1.4) Signed (A) Signed (F) Signed (D) a141 5 af52 Inputs: Outputs: F(25) Inputs: e4a4(2) Outputs: F(0.5) Inputs: f14a(1) Outputs: B(8), A(17) Signed (F) Signed (F) Signed (A) e4a4 7ac8 bd7d Inputs: f3cd(1) Outputs: D(0.5), F(1), C(1.5) Inputs: bd7d(1) Outputs: A(0.5), E(0.4) Inputs: af52(1) Outputs: C(1), D(3).E(3),B(1) Signed (C) Signed (B) Signed (B) Which one of the following transaction is a coinbase transaction? 78a8 7ac8 5ce6 a14f