PROBLEM $7$ b$)$ Draw a Precedence Diagram for the following avtivities Activity Duration $($days$)$ Preceding activities A $5-$ B $6-$ C $3-$ D $5$ A $($begins $2$ days after A completed$)$ E $5$ B $($begins $1$ day after B completed$)$ F $4$ B G $2$ A$,$C H $6$ A$,$C$,$E I $5$ A$,$C$,$E J $2$ D K $4$ D $($begins $3$ days after D completed$)$ L $4$ G$,$H$,$K M $3$ J N $4$ F O $4$ F$,$I $($begins $2$ days after I completed$)$ PROBLEM $7$ b$)$ Draw a Precedence Diagram for the following avtivities