Which of the following is correct with respect to melting point of a transition element?

In general, the melting points of transition elements increases across a period from left to right due to increasing atomic number and the corresponding increase in effective nuclear charge. Among the elements mentioned in the options, chromium $(\mathrm{Cr})$ has a higher melting point compared to manganese $(\mathrm{Mn})$. It is because chromium has a larger atomic number and a higher effective nuclear charge. Which leads to stronger metallic bonding and higher melting temperatures.