An iron weight at $45$ degree celcius is dipped in a bucket containing water at $45$ degree celcius . The heat will

Question

$\begin{array}{1 1} \text{(i) Flow from water to iron weight} \\ \text{(ii) Flow fron iron weight to water} \\ \text{(iii) Not flow between them} \\ \text{(iv) Flow and increase the temperature} \end{array} $