The dimensions ‘a’ and ‘b’ respectively, are closest to

Question

One tooth of gear having 4 module and 32 teeth is shown in the figure. Assume that the gear tooth and the corresponding tooth space make equal intercepts on the pitch circumference.                                             

 

The dimensions ‘a’ and ‘b’ respectively, are closest to

      (a) 6.08 mm, 4mm

      (b) 6.48 mm, 4.2 mm

      (c) 6.28 mm, 4.3 mm

      (d) 6.28 mm, 4.1 mm