Could you help writing a user defined function for part B and a for$/$while loop for part C$.$

B$.$ Averaging for Each Year $-$ Write a user$-$defined function that calculates the average Ocean $pH,$

average Ocean $C{O}_2,$ and average atmospheric $CO2$ for a given year. The specification of the

function is as follows:

Inputs: the two data tables $($TableOne & TableTwo$),$ and the year $($a scalar$)$

Outputs: Average Ocean pH$,$ Ocean CO$2,$ and Atmospheric $CO2$ for the specified year $(3$ scalars$).$

Use logical indexing and$/$or the find$()$ function, NOT loops or if statements.

C$.$ Using the function that you wrote in part B$,$ calculate the average Ocean $pH,$ Ocean $CO2,$ and

Atmospheric CO$2$ for each year from $1988$ to $2019.$ Store the results in a matrix with the

following format:

Column $1$: year

Column $2$: average Ocean $pH$

Column $3$: average Ocean CO$2$

Column $4$: average Atmospheric $CO2$