Find the Common Difference of the Sequence $\mathrm { a } _ { 1 } = 3.82 , \mathrm { a } _ { 4 } = 12.16 ; \text { find } \mathrm { d }$

Multiple Choice

Find the common difference of the sequence.
- $\mathrm { a } _ { 1 } = 3.82 , \mathrm { a } _ { 4 } = 12.16 ; \text { find } \mathrm { d }$

A) 8.34
B) 2.78
C) 3.82
D) 2.085