According to the formula,

The average of consecutive numbers= $\frac{\mathrm{First} \mathrm{number} +\mathrm{Last} \mathrm{number}}{2}$

Here,

First number= 1 and Last number =53

∴ Required average=$\frac{1+53}{2}=\frac{54}{2}=27$

Hence, Option B is correct.