(C++) Consider the following 2D array of objects:

Valve sewer[NS_DIR][EW_DIR];

Class Valve has a data member openPercent representing how open the valve is (range is 01, 1=fully open). There is a close(double percent) member function to partially or fully close the valve (range is 01, 1=close fully) and a default constructor that makes the valve fully open.

Match each prototype with a valid argument to the function using the 2D array. Answers may be used more than once. Choose: sewer, sewer[1], sewer[0][2], invalid prototype

a. double measure(Valve* flows);

b. bool isEmpty(Valve drains[NS_DIR][ ]);

c. void openAll(Valve valves[ ]);

d. void reroute(Valve plumbing[ ][ ]);

e. void flushLine(Valve& junction);

f. void clearFatburg(Valve system[ ][EW_DIR]);