Which of the following is true about the optimum effective temperature for human comfort?

Which of the following is true about the optimum effective temperature for human comfort? Correct Answer Lower in winter than in summer

Optimum effective temperature is dependent on climatic and seasonal changes. So, for human comfort, the optimum effective temperature is lower in winter than in summer.

Related Questions

Statement (I): Effective temperature is an index which correlates the combined effect of air temperature, air humidity and air movement upon human thermal comfort. Statement (II): Thermal comfort is not affected by mean radiant temperature. 
The optimum effective temperature for human comfort is