Please design a stock market decision advisor based on the inflation rate and interests rate

based on the following Table. H: High, M: Moderate, L: Low; B: Buy, S: Sell

Inflation: H$,$H$,$H$,$M$,$M$,$M$,$L$,$L$,$L$,$H$,$L$,$L

Interests: H$,$M$,$L$,$H$,$M$,$LH$,$M$,$L$,$L$,$L$,$M

Decision: S$,$S$,$B$,$S$,$B$,$B$,$S$,$B$,$B$,$S$,$B$,$B

$($a$)$ Design and draw a decision tree based on entropy and information gain.

$($b$)$ What is the decision error of your design in $($a$).$

$($c$)$ Design a decision tree based on Gini index and Gini gain.

$($d$)$ What is your decision error of your design in $($c$).$